21379525

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{797}}^1$

素因数の和:873

約数の個数: 24

約数和(自身を含む): 28201320

約数和(自身を除く): 6821795

約数列:

[1, 5, 25, 29, 37, 145, 185, 725, 797, 925, 1073, 3985, 5365, 19925, 23113, 26825, 29489, 115565, 147445, 577825, 737225, 855181, 4275905, 21379525]

約数ペア:

[(1, 21379525), (5, 4275905), (25, 855181), (29, 737225), (37, 577825), (145, 147445), (185, 115565), (725, 29489), (797, 26825), (925, 23113), (1073, 19925), (3985, 5365)]