20643250

素因数分解:

$2^1\times 5^3\times {\mathrm{71}}^1\times {\mathrm{1163}}^1$

素因数の和:1251

約数の個数: 32

約数和(自身を含む): 39222144

約数和(自身を除く): 18578894

約数列:

[1, 2, 5, 10, 25, 50, 71, 125, 142, 250, 355, 710, 1163, 1775, 2326, 3550, 5815, 8875, 11630, 17750, 29075, 58150, 82573, 145375, 165146, 290750, 412865, 825730, 2064325, 4128650, 10321625, 20643250]

約数ペア:

[(1, 20643250), (2, 10321625), (5, 4128650), (10, 2064325), (25, 825730), (50, 412865), (71, 290750), (125, 165146), (142, 145375), (250, 82573), (355, 58150), (710, 29075), (1163, 17750), (1775, 11630), (2326, 8875), (3550, 5815)]