21102625

素因数分解:

$5^3\times {\mathrm{401}}^1\times {\mathrm{421}}^1$

素因数の和:837

約数の個数: 16

約数和(自身を含む): 26464464

約数和(自身を除く): 5361839

約数列:

[1, 5, 25, 125, 401, 421, 2005, 2105, 10025, 10525, 50125, 52625, 168821, 844105, 4220525, 21102625]

約数ペア:

[(1, 21102625), (5, 4220525), (25, 844105), (125, 168821), (401, 52625), (421, 50125), (2005, 10525), (2105, 10025)]