78874640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{509}}^1$

素因数の和:684

約数の個数: 80

約数和(自身を含む): 199206000

約数和(自身を除く): 120331360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 149, 208, 260, 298, 509, 520, 596, 745, 1018, 1040, 1192, 1490, 1937, 2036, 2384, 2545, 2980, 3874, 4072, 5090, 5960, 6617, 7748, 8144, 9685, 10180, 11920, 13234, 15496, 19370, 20360, 26468, 30992, 33085, 38740, 40720, 52936, 66170, 75841, 77480, 105872, 132340, 151682, 154960, 264680, 303364, 379205, 529360, 606728, 758410, 985933, 1213456, 1516820, 1971866, 3033640, 3943732, 4929665, 6067280, 7887464, 9859330, 15774928, 19718660, 39437320, 78874640]

約数ペア:

[(1, 78874640), (2, 39437320), (4, 19718660), (5, 15774928), (8, 9859330), (10, 7887464), (13, 6067280), (16, 4929665), (20, 3943732), (26, 3033640), (40, 1971866), (52, 1516820), (65, 1213456), (80, 985933), (104, 758410), (130, 606728), (149, 529360), (208, 379205), (260, 303364), (298, 264680), (509, 154960), (520, 151682), (596, 132340), (745, 105872), (1018, 77480), (1040, 75841), (1192, 66170), (1490, 52936), (1937, 40720), (2036, 38740), (2384, 33085), (2545, 30992), (2980, 26468), (3874, 20360), (4072, 19370), (5090, 15496), (5960, 13234), (6617, 11920), (7748, 10180), (8144, 9685)]