21303020

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2683}}^1$

素因数の和:3089

約数の個数: 24

約数和(自身を含む): 44865744

約数和(自身を除く): 23562724

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 2683, 3970, 5366, 7940, 10732, 13415, 26830, 53660, 1065151, 2130302, 4260604, 5325755, 10651510, 21303020]

約数ペア:

[(1, 21303020), (2, 10651510), (4, 5325755), (5, 4260604), (10, 2130302), (20, 1065151), (397, 53660), (794, 26830), (1588, 13415), (1985, 10732), (2683, 7940), (3970, 5366)]