1640286720

素因数分解:

$2^9\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1249}}^1$

素因数の和:1300

約数の個数: 320

約数和(自身を含む): 6138000000

約数和(自身を除く): 4497713280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 32, 36, 38, 40, 45, 48, 54, 57, 60, 64, 72, 76, 80, 90, 95, 96, 108, 114, 120, 128, 135, 144, 152, 160, 171, 180, 190, 192, 216, 228, 240, 256, 270, 285, 288, 304, 320, 342, 360, 380, 384, 432, 456, 480, 512, 513, 540, 570, 576, 608, 640, 684, 720, 760, 768, 855, 864, 912, 960, 1026, 1080, 1140, 1152, 1216, 1249, 1280, 1368, 1440, 1520, 1536, 1710, 1728, 1824, 1920, 2052, 2160, 2280, 2304, 2432, 2498, 2560, 2565, 2736, 2880, 3040, 3420, 3456, 3648, 3747, 3840, 4104, 4320, 4560, 4608, 4864, 4996, 5130, 5472, 5760, 6080, 6245, 6840, 6912, 7296, 7494, 7680, 8208, 8640, 9120, 9728, 9992, 10260, 10944, 11241, 11520, 12160, 12490, 13680, 13824, 14592, 14988, 16416, 17280, 18240, 18735, 19984, 20520, 21888, 22482, 23040, 23731, 24320, 24980, 27360, 29184, 29976, 32832, 33723, 34560, 36480, 37470, 39968, 41040, 43776, 44964, 47462, 48640, 49960, 54720, 56205, 59952, 65664, 67446, 69120, 71193, 72960, 74940, 79936, 82080, 87552, 89928, 94924, 99920, 109440, 112410, 118655, 119904, 131328, 134892, 142386, 145920, 149880, 159872, 164160, 168615, 179856, 189848, 199840, 213579, 218880, 224820, 237310, 239808, 262656, 269784, 284772, 299760, 319744, 328320, 337230, 355965, 359712, 379696, 399680, 427158, 437760, 449640, 474620, 479616, 539568, 569544, 599520, 639488, 640737, 656640, 674460, 711930, 719424, 759392, 799360, 854316, 899280, 949240, 959232, 1067895, 1079136, 1139088, 1199040, 1281474, 1313280, 1348920, 1423860, 1438848, 1518784, 1598720, 1708632, 1798560, 1898480, 1918464, 2135790, 2158272, 2278176, 2398080, 2562948, 2697840, 2847720, 2877696, 3037568, 3197440, 3203685, 3417264, 3597120, 3796960, 4271580, 4316544, 4556352, 4796160, 5125896, 5395680, 5695440, 5755392, 6075136, 6407370, 6834528, 7194240, 7593920, 8543160, 8633088, 9112704, 9592320, 10251792, 10791360, 11390880, 12150272, 12814740, 13669056, 14388480, 15187840, 17086320, 17266176, 18225408, 20503584, 21582720, 22781760, 25629480, 27338112, 28776960, 30375680, 34172640, 36450816, 41007168, 43165440, 45563520, 51258960, 54676224, 60751360, 68345280, 82014336, 86330880, 91127040, 102517920, 109352448, 136690560, 164028672, 182254080, 205035840, 273381120, 328057344, 410071680, 546762240, 820143360, 1640286720]

約数ペア:

[(1, 1640286720), (2, 820143360), (3, 546762240), (4, 410071680), (5, 328057344), (6, 273381120), (8, 205035840), (9, 182254080), (10, 164028672), (12, 136690560), (15, 109352448), (16, 102517920), (18, 91127040), (19, 86330880), (20, 82014336), (24, 68345280), (27, 60751360), (30, 54676224), (32, 51258960), (36, 45563520), (38, 43165440), (40, 41007168), (45, 36450816), (48, 34172640), (54, 30375680), (57, 28776960), (60, 27338112), (64, 25629480), (72, 22781760), (76, 21582720), (80, 20503584), (90, 18225408), (95, 17266176), (96, 17086320), (108, 15187840), (114, 14388480), (120, 13669056), (128, 12814740), (135, 12150272), (144, 11390880), (152, 10791360), (160, 10251792), (171, 9592320), (180, 9112704), (190, 8633088), (192, 8543160), (216, 7593920), (228, 7194240), (240, 6834528), (256, 6407370), (270, 6075136), (285, 5755392), (288, 5695440), (304, 5395680), (320, 5125896), (342, 4796160), (360, 4556352), (380, 4316544), (384, 4271580), (432, 3796960), (456, 3597120), (480, 3417264), (512, 3203685), (513, 3197440), (540, 3037568), (570, 2877696), (576, 2847720), (608, 2697840), (640, 2562948), (684, 2398080), (720, 2278176), (760, 2158272), (768, 2135790), (855, 1918464), (864, 1898480), (912, 1798560), (960, 1708632), (1026, 1598720), (1080, 1518784), (1140, 1438848), (1152, 1423860), (1216, 1348920), (1249, 1313280), (1280, 1281474), (1368, 1199040), (1440, 1139088), (1520, 1079136), (1536, 1067895), (1710, 959232), (1728, 949240), (1824, 899280), (1920, 854316), (2052, 799360), (2160, 759392), (2280, 719424), (2304, 711930), (2432, 674460), (2498, 656640), (2560, 640737), (2565, 639488), (2736, 599520), (2880, 569544), (3040, 539568), (3420, 479616), (3456, 474620), (3648, 449640), (3747, 437760), (3840, 427158), (4104, 399680), (4320, 379696), (4560, 359712), (4608, 355965), (4864, 337230), (4996, 328320), (5130, 319744), (5472, 299760), (5760, 284772), (6080, 269784), (6245, 262656), (6840, 239808), (6912, 237310), (7296, 224820), (7494, 218880), (7680, 213579), (8208, 199840), (8640, 189848), (9120, 179856), (9728, 168615), (9992, 164160), (10260, 159872), (10944, 149880), (11241, 145920), (11520, 142386), (12160, 134892), (12490, 131328), (13680, 119904), (13824, 118655), (14592, 112410), (14988, 109440), (16416, 99920), (17280, 94924), (18240, 89928), (18735, 87552), (19984, 82080), (20520, 79936), (21888, 74940), (22482, 72960), (23040, 71193), (23731, 69120), (24320, 67446), (24980, 65664), (27360, 59952), (29184, 56205), (29976, 54720), (32832, 49960), (33723, 48640), (34560, 47462), (36480, 44964), (37470, 43776), (39968, 41040)]