21877525

素因数分解:

$5^2\times {\mathrm{449}}^1\times {\mathrm{1949}}^1$

素因数の和:2408

約数の個数: 12

約数和(自身を含む): 27202500

約数和(自身を除く): 5324975

約数列:

[1, 5, 25, 449, 1949, 2245, 9745, 11225, 48725, 875101, 4375505, 21877525]

約数ペア:

[(1, 21877525), (5, 4375505), (25, 875101), (449, 48725), (1949, 11225), (2245, 9745)]