25153880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{521}}^1$

素因数の和:620

約数の個数: 64

約数和(自身を含む): 60886080

約数和(自身を除く): 35732200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 71, 85, 136, 142, 170, 284, 340, 355, 521, 568, 680, 710, 1042, 1207, 1420, 2084, 2414, 2605, 2840, 4168, 4828, 5210, 6035, 8857, 9656, 10420, 12070, 17714, 20840, 24140, 35428, 36991, 44285, 48280, 70856, 73982, 88570, 147964, 177140, 184955, 295928, 354280, 369910, 628847, 739820, 1257694, 1479640, 2515388, 3144235, 5030776, 6288470, 12576940, 25153880]

約数ペア:

[(1, 25153880), (2, 12576940), (4, 6288470), (5, 5030776), (8, 3144235), (10, 2515388), (17, 1479640), (20, 1257694), (34, 739820), (40, 628847), (68, 369910), (71, 354280), (85, 295928), (136, 184955), (142, 177140), (170, 147964), (284, 88570), (340, 73982), (355, 70856), (521, 48280), (568, 44285), (680, 36991), (710, 35428), (1042, 24140), (1207, 20840), (1420, 17714), (2084, 12070), (2414, 10420), (2605, 9656), (2840, 8857), (4168, 6035), (4828, 5210)]