2790775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{277}}^1$

素因数の和:331

約数の個数: 24

約数和(自身を含む): 3860864

約数和(自身を除く): 1070089

約数列:

[1, 5, 13, 25, 31, 65, 155, 277, 325, 403, 775, 1385, 2015, 3601, 6925, 8587, 10075, 18005, 42935, 90025, 111631, 214675, 558155, 2790775]

約数ペア:

[(1, 2790775), (5, 558155), (13, 214675), (25, 111631), (31, 90025), (65, 42935), (155, 18005), (277, 10075), (325, 8587), (403, 6925), (775, 3601), (1385, 2015)]