6990425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:317

約数の個数: 24

約数和(自身を含む): 9462936

約数和(自身を除く): 2472511

約数列:

[1, 5, 13, 25, 65, 137, 157, 325, 685, 785, 1781, 2041, 3425, 3925, 8905, 10205, 21509, 44525, 51025, 107545, 279617, 537725, 1398085, 6990425]

約数ペア:

[(1, 6990425), (5, 1398085), (13, 537725), (25, 279617), (65, 107545), (137, 51025), (157, 44525), (325, 21509), (685, 10205), (785, 8905), (1781, 3925), (2041, 3425)]