20012525

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{443}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 26977440

約数和(自身を除く): 6964915

約数列:

[1, 5, 13, 25, 65, 139, 325, 443, 695, 1807, 2215, 3475, 5759, 9035, 11075, 28795, 45175, 61577, 143975, 307885, 800501, 1539425, 4002505, 20012525]

約数ペア:

[(1, 20012525), (5, 4002505), (13, 1539425), (25, 800501), (65, 307885), (139, 143975), (325, 61577), (443, 45175), (695, 28795), (1807, 11075), (2215, 9035), (3475, 5759)]