21259570

素因数分解:

$2^1\times 5^1\times {\mathrm{443}}^1\times {\mathrm{4799}}^1$

素因数の和:5249

約数の個数: 16

約数和(自身を含む): 38361600

約数和(自身を除く): 17102030

約数列:

[1, 2, 5, 10, 443, 886, 2215, 4430, 4799, 9598, 23995, 47990, 2125957, 4251914, 10629785, 21259570]

約数ペア:

[(1, 21259570), (2, 10629785), (5, 4251914), (10, 2125957), (443, 47990), (886, 23995), (2215, 9598), (4430, 4799)]