19781280

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1$

素因数の和:284

約数の個数: 192

約数和(自身を含む): 73180800

約数和(自身を除く): 53399520

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, 72, 76, 80, 90, 95, 96, 108, 114, 120, 135, 144, 152, 160, 171, 180, 190, 216, 228, 240, 241, 270, 285, 288, 304, 342, 360, 380, 432, 456, 480, 482, 513, 540, 570, 608, 684, 720, 723, 760, 855, 864, 912, 964, 1026, 1080, 1140, 1205, 1368, 1440, 1446, 1520, 1710, 1824, 1928, 2052, 2160, 2169, 2280, 2410, 2565, 2736, 2892, 3040, 3420, 3615, 3856, 4104, 4320, 4338, 4560, 4579, 4820, 5130, 5472, 5784, 6507, 6840, 7230, 7712, 8208, 8676, 9120, 9158, 9640, 10260, 10845, 11568, 13014, 13680, 13737, 14460, 16416, 17352, 18316, 19280, 20520, 21690, 22895, 23136, 26028, 27360, 27474, 28920, 32535, 34704, 36632, 38560, 41040, 41211, 43380, 45790, 52056, 54948, 57840, 65070, 68685, 69408, 73264, 82080, 82422, 86760, 91580, 104112, 109896, 115680, 123633, 130140, 137370, 146528, 164844, 173520, 183160, 206055, 208224, 219792, 247266, 260280, 274740, 329688, 347040, 366320, 412110, 439584, 494532, 520560, 549480, 618165, 659376, 732640, 824220, 989064, 1041120, 1098960, 1236330, 1318752, 1648440, 1978128, 2197920, 2472660, 3296880, 3956256, 4945320, 6593760, 9890640, 19781280]

約数ペア:

[(1, 19781280), (2, 9890640), (3, 6593760), (4, 4945320), (5, 3956256), (6, 3296880), (8, 2472660), (9, 2197920), (10, 1978128), (12, 1648440), (15, 1318752), (16, 1236330), (18, 1098960), (19, 1041120), (20, 989064), (24, 824220), (27, 732640), (30, 659376), (32, 618165), (36, 549480), (38, 520560), (40, 494532), (45, 439584), (48, 412110), (54, 366320), (57, 347040), (60, 329688), (72, 274740), (76, 260280), (80, 247266), (90, 219792), (95, 208224), (96, 206055), (108, 183160), (114, 173520), (120, 164844), (135, 146528), (144, 137370), (152, 130140), (160, 123633), (171, 115680), (180, 109896), (190, 104112), (216, 91580), (228, 86760), (240, 82422), (241, 82080), (270, 73264), (285, 69408), (288, 68685), (304, 65070), (342, 57840), (360, 54948), (380, 52056), (432, 45790), (456, 43380), (480, 41211), (482, 41040), (513, 38560), (540, 36632), (570, 34704), (608, 32535), (684, 28920), (720, 27474), (723, 27360), (760, 26028), (855, 23136), (864, 22895), (912, 21690), (964, 20520), (1026, 19280), (1080, 18316), (1140, 17352), (1205, 16416), (1368, 14460), (1440, 13737), (1446, 13680), (1520, 13014), (1710, 11568), (1824, 10845), (1928, 10260), (2052, 9640), (2160, 9158), (2169, 9120), (2280, 8676), (2410, 8208), (2565, 7712), (2736, 7230), (2892, 6840), (3040, 6507), (3420, 5784), (3615, 5472), (3856, 5130), (4104, 4820), (4320, 4579), (4338, 4560)]