21339125

素因数分解:

$5^3\times {\mathrm{53}}^1\times {\mathrm{3221}}^1$

素因数の和:3289

約数の個数: 16

約数和(自身を含む): 27142128

約数和(自身を除く): 5803003

約数列:

[1, 5, 25, 53, 125, 265, 1325, 3221, 6625, 16105, 80525, 170713, 402625, 853565, 4267825, 21339125]

約数ペア:

[(1, 21339125), (5, 4267825), (25, 853565), (53, 402625), (125, 170713), (265, 80525), (1325, 16105), (3221, 6625)]