20178925

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2141}}^1$

素因数の和:2193

約数の個数: 24

約数和(自身を含む): 27888840

約数和(自身を除く): 7709915

約数列:

[1, 5, 13, 25, 29, 65, 145, 325, 377, 725, 1885, 2141, 9425, 10705, 27833, 53525, 62089, 139165, 310445, 695825, 807157, 1552225, 4035785, 20178925]

約数ペア:

[(1, 20178925), (5, 4035785), (13, 1552225), (25, 807157), (29, 695825), (65, 310445), (145, 139165), (325, 62089), (377, 53525), (725, 27833), (1885, 10705), (2141, 9425)]