18088025

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 23640600

約数和(自身を除く): 5552575

約数列:

[1, 5, 25, 29, 61, 145, 305, 409, 725, 1525, 1769, 2045, 8845, 10225, 11861, 24949, 44225, 59305, 124745, 296525, 623725, 723521, 3617605, 18088025]

約数ペア:

[(1, 18088025), (5, 3617605), (25, 723521), (29, 623725), (61, 296525), (145, 124745), (305, 59305), (409, 44225), (725, 24949), (1525, 11861), (1769, 10225), (2045, 8845)]