77776400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{14957}}^1$

素因数の和:14988

約数の個数: 60

約数和(自身を含む): 201244932

約数和(自身を除く): 123468532

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 14957, 29914, 59828, 74785, 119656, 149570, 194441, 239312, 299140, 373925, 388882, 598280, 747850, 777764, 972205, 1196560, 1495700, 1555528, 1944410, 2991400, 3111056, 3888820, 4861025, 5982800, 7777640, 9722050, 15555280, 19444100, 38888200, 77776400]

約数ペア:

[(1, 77776400), (2, 38888200), (4, 19444100), (5, 15555280), (8, 9722050), (10, 7777640), (13, 5982800), (16, 4861025), (20, 3888820), (25, 3111056), (26, 2991400), (40, 1944410), (50, 1555528), (52, 1495700), (65, 1196560), (80, 972205), (100, 777764), (104, 747850), (130, 598280), (200, 388882), (208, 373925), (260, 299140), (325, 239312), (400, 194441), (520, 149570), (650, 119656), (1040, 74785), (1300, 59828), (2600, 29914), (5200, 14957)]