28908725

素因数分解:

$5^2\times {\mathrm{101}}^1\times {\mathrm{107}}^2$

素因数の和:325

約数の個数: 18

約数和(自身を含む): 36543234

約数和(自身を除く): 7634509

約数列:

[1, 5, 25, 101, 107, 505, 535, 2525, 2675, 10807, 11449, 54035, 57245, 270175, 286225, 1156349, 5781745, 28908725]

約数ペア:

[(1, 28908725), (5, 5781745), (25, 1156349), (101, 286225), (107, 270175), (505, 57245), (535, 54035), (2525, 11449), (2675, 10807)]