2658500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{409}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 6268080

約数和(自身を除く): 3609580

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 409, 500, 650, 818, 1300, 1625, 1636, 2045, 3250, 4090, 5317, 6500, 8180, 10225, 10634, 20450, 21268, 26585, 40900, 51125, 53170, 102250, 106340, 132925, 204500, 265850, 531700, 664625, 1329250, 2658500]

約数ペア:

[(1, 2658500), (2, 1329250), (4, 664625), (5, 531700), (10, 265850), (13, 204500), (20, 132925), (25, 106340), (26, 102250), (50, 53170), (52, 51125), (65, 40900), (100, 26585), (125, 21268), (130, 20450), (250, 10634), (260, 10225), (325, 8180), (409, 6500), (500, 5317), (650, 4090), (818, 3250), (1300, 2045), (1625, 1636)]