21025680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{293}}^1$

素因数の和:345

約数の個数: 160

約数和(自身を含む): 73495296

約数和(自身を除く): 52469616

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 23, 24, 26, 30, 39, 40, 46, 48, 52, 60, 65, 69, 78, 80, 92, 104, 115, 120, 130, 138, 156, 184, 195, 208, 230, 240, 260, 276, 293, 299, 312, 345, 368, 390, 460, 520, 552, 586, 598, 624, 690, 780, 879, 897, 920, 1040, 1104, 1172, 1196, 1380, 1465, 1495, 1560, 1758, 1794, 1840, 2344, 2392, 2760, 2930, 2990, 3120, 3516, 3588, 3809, 4395, 4485, 4688, 4784, 5520, 5860, 5980, 6739, 7032, 7176, 7618, 8790, 8970, 11427, 11720, 11960, 13478, 14064, 14352, 15236, 17580, 17940, 19045, 20217, 22854, 23440, 23920, 26956, 30472, 33695, 35160, 35880, 38090, 40434, 45708, 53912, 57135, 60944, 67390, 70320, 71760, 76180, 80868, 87607, 91416, 101085, 107824, 114270, 134780, 152360, 161736, 175214, 182832, 202170, 228540, 262821, 269560, 304720, 323472, 350428, 404340, 438035, 457080, 525642, 539120, 700856, 808680, 876070, 914160, 1051284, 1314105, 1401712, 1617360, 1752140, 2102568, 2628210, 3504280, 4205136, 5256420, 7008560, 10512840, 21025680]

約数ペア:

[(1, 21025680), (2, 10512840), (3, 7008560), (4, 5256420), (5, 4205136), (6, 3504280), (8, 2628210), (10, 2102568), (12, 1752140), (13, 1617360), (15, 1401712), (16, 1314105), (20, 1051284), (23, 914160), (24, 876070), (26, 808680), (30, 700856), (39, 539120), (40, 525642), (46, 457080), (48, 438035), (52, 404340), (60, 350428), (65, 323472), (69, 304720), (78, 269560), (80, 262821), (92, 228540), (104, 202170), (115, 182832), (120, 175214), (130, 161736), (138, 152360), (156, 134780), (184, 114270), (195, 107824), (208, 101085), (230, 91416), (240, 87607), (260, 80868), (276, 76180), (293, 71760), (299, 70320), (312, 67390), (345, 60944), (368, 57135), (390, 53912), (460, 45708), (520, 40434), (552, 38090), (586, 35880), (598, 35160), (624, 33695), (690, 30472), (780, 26956), (879, 23920), (897, 23440), (920, 22854), (1040, 20217), (1104, 19045), (1172, 17940), (1196, 17580), (1380, 15236), (1465, 14352), (1495, 14064), (1560, 13478), (1758, 11960), (1794, 11720), (1840, 11427), (2344, 8970), (2392, 8790), (2760, 7618), (2930, 7176), (2990, 7032), (3120, 6739), (3516, 5980), (3588, 5860), (3809, 5520), (4395, 4784), (4485, 4688)]