66462500

素因数分解:

$2^2\times 5^5\times {\mathrm{13}}^1\times {\mathrm{409}}^1$

素因数の和:451

約数の個数: 72

約数和(自身を含む): 156943080

約数和(自身を除く): 90480580

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 409, 500, 625, 650, 818, 1250, 1300, 1625, 1636, 2045, 2500, 3125, 3250, 4090, 5317, 6250, 6500, 8125, 8180, 10225, 10634, 12500, 16250, 20450, 21268, 26585, 32500, 40625, 40900, 51125, 53170, 81250, 102250, 106340, 132925, 162500, 204500, 255625, 265850, 511250, 531700, 664625, 1022500, 1278125, 1329250, 2556250, 2658500, 3323125, 5112500, 6646250, 13292500, 16615625, 33231250, 66462500]

約数ペア:

[(1, 66462500), (2, 33231250), (4, 16615625), (5, 13292500), (10, 6646250), (13, 5112500), (20, 3323125), (25, 2658500), (26, 2556250), (50, 1329250), (52, 1278125), (65, 1022500), (100, 664625), (125, 531700), (130, 511250), (250, 265850), (260, 255625), (325, 204500), (409, 162500), (500, 132925), (625, 106340), (650, 102250), (818, 81250), (1250, 53170), (1300, 51125), (1625, 40900), (1636, 40625), (2045, 32500), (2500, 26585), (3125, 21268), (3250, 20450), (4090, 16250), (5317, 12500), (6250, 10634), (6500, 10225), (8125, 8180)]