172877620

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{21773}}^1$

素因数の和:22179

約数の個数: 24

約数和(自身を含む): 363974184

約数和(自身を除く): 191096564

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 21773, 43546, 87092, 108865, 217730, 435460, 8643881, 17287762, 34575524, 43219405, 86438810, 172877620]

約数ペア:

[(1, 172877620), (2, 86438810), (4, 43219405), (5, 34575524), (10, 17287762), (20, 8643881), (397, 435460), (794, 217730), (1588, 108865), (1985, 87092), (3970, 43546), (7940, 21773)]