20985120

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:112

約数の個数: 288

約数和(自身を含む): 82555200

約数和(自身を除く): 61570080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 19, 20, 24, 26, 30, 32, 36, 38, 39, 40, 45, 48, 52, 57, 59, 60, 65, 72, 76, 78, 80, 90, 95, 96, 104, 114, 117, 118, 120, 130, 144, 152, 156, 160, 171, 177, 180, 190, 195, 208, 228, 234, 236, 240, 247, 260, 285, 288, 295, 304, 312, 342, 354, 360, 380, 390, 416, 456, 468, 472, 480, 494, 520, 531, 570, 585, 590, 608, 624, 684, 708, 720, 741, 760, 767, 780, 855, 885, 912, 936, 944, 988, 1040, 1062, 1121, 1140, 1170, 1180, 1235, 1248, 1368, 1416, 1440, 1482, 1520, 1534, 1560, 1710, 1770, 1824, 1872, 1888, 1976, 2080, 2124, 2223, 2242, 2280, 2301, 2340, 2360, 2470, 2655, 2736, 2832, 2964, 3040, 3068, 3120, 3363, 3420, 3540, 3705, 3744, 3835, 3952, 4248, 4446, 4484, 4560, 4602, 4680, 4720, 4940, 5310, 5472, 5605, 5664, 5928, 6136, 6240, 6726, 6840, 6903, 7080, 7410, 7670, 7904, 8496, 8892, 8968, 9120, 9204, 9360, 9440, 9880, 10089, 10620, 11115, 11210, 11505, 11856, 12272, 13452, 13680, 13806, 14160, 14573, 14820, 15340, 16815, 16992, 17784, 17936, 18408, 18720, 19760, 20178, 21240, 22230, 22420, 23010, 23712, 24544, 26904, 27360, 27612, 28320, 29146, 29640, 30680, 33630, 34515, 35568, 35872, 36816, 39520, 40356, 42480, 43719, 44460, 44840, 46020, 50445, 53808, 55224, 58292, 59280, 61360, 67260, 69030, 71136, 72865, 73632, 80712, 84960, 87438, 88920, 89680, 92040, 100890, 107616, 110448, 116584, 118560, 122720, 131157, 134520, 138060, 145730, 161424, 174876, 177840, 179360, 184080, 201780, 218595, 220896, 233168, 262314, 269040, 276120, 291460, 322848, 349752, 355680, 368160, 403560, 437190, 466336, 524628, 538080, 552240, 582920, 655785, 699504, 807120, 874380, 1049256, 1104480, 1165840, 1311570, 1399008, 1614240, 1748760, 2098512, 2331680, 2623140, 3497520, 4197024, 5246280, 6995040, 10492560, 20985120]

約数ペア:

[(1, 20985120), (2, 10492560), (3, 6995040), (4, 5246280), (5, 4197024), (6, 3497520), (8, 2623140), (9, 2331680), (10, 2098512), (12, 1748760), (13, 1614240), (15, 1399008), (16, 1311570), (18, 1165840), (19, 1104480), (20, 1049256), (24, 874380), (26, 807120), (30, 699504), (32, 655785), (36, 582920), (38, 552240), (39, 538080), (40, 524628), (45, 466336), (48, 437190), (52, 403560), (57, 368160), (59, 355680), (60, 349752), (65, 322848), (72, 291460), (76, 276120), (78, 269040), (80, 262314), (90, 233168), (95, 220896), (96, 218595), (104, 201780), (114, 184080), (117, 179360), (118, 177840), (120, 174876), (130, 161424), (144, 145730), (152, 138060), (156, 134520), (160, 131157), (171, 122720), (177, 118560), (180, 116584), (190, 110448), (195, 107616), (208, 100890), (228, 92040), (234, 89680), (236, 88920), (240, 87438), (247, 84960), (260, 80712), (285, 73632), (288, 72865), (295, 71136), (304, 69030), (312, 67260), (342, 61360), (354, 59280), (360, 58292), (380, 55224), (390, 53808), (416, 50445), (456, 46020), (468, 44840), (472, 44460), (480, 43719), (494, 42480), (520, 40356), (531, 39520), (570, 36816), (585, 35872), (590, 35568), (608, 34515), (624, 33630), (684, 30680), (708, 29640), (720, 29146), (741, 28320), (760, 27612), (767, 27360), (780, 26904), (855, 24544), (885, 23712), (912, 23010), (936, 22420), (944, 22230), (988, 21240), (1040, 20178), (1062, 19760), (1121, 18720), (1140, 18408), (1170, 17936), (1180, 17784), (1235, 16992), (1248, 16815), (1368, 15340), (1416, 14820), (1440, 14573), (1482, 14160), (1520, 13806), (1534, 13680), (1560, 13452), (1710, 12272), (1770, 11856), (1824, 11505), (1872, 11210), (1888, 11115), (1976, 10620), (2080, 10089), (2124, 9880), (2223, 9440), (2242, 9360), (2280, 9204), (2301, 9120), (2340, 8968), (2360, 8892), (2470, 8496), (2655, 7904), (2736, 7670), (2832, 7410), (2964, 7080), (3040, 6903), (3068, 6840), (3120, 6726), (3363, 6240), (3420, 6136), (3540, 5928), (3705, 5664), (3744, 5605), (3835, 5472), (3952, 5310), (4248, 4940), (4446, 4720), (4484, 4680), (4560, 4602)]