2020137275

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{478139}}^1$

素因数の和:478175

約数の個数: 18

約数和(自身を含む): 2712488220

約数和(自身を除く): 692350945

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 478139, 2390695, 6215807, 11953475, 31079035, 80805491, 155395175, 404027455, 2020137275]

約数ペア:

[(1, 2020137275), (5, 404027455), (13, 155395175), (25, 80805491), (65, 31079035), (169, 11953475), (325, 6215807), (845, 2390695), (4225, 478139)]