72721820

素因数分解:

$2^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{21773}}^1$

素因数の和:21949

約数の個数: 24

約数和(自身を含む): 153637344

約数和(自身を除く): 80915524

約数列:

[1, 2, 4, 5, 10, 20, 167, 334, 668, 835, 1670, 3340, 21773, 43546, 87092, 108865, 217730, 435460, 3636091, 7272182, 14544364, 18180455, 36360910, 72721820]

約数ペア:

[(1, 72721820), (2, 36360910), (4, 18180455), (5, 14544364), (10, 7272182), (20, 3636091), (167, 435460), (334, 217730), (668, 108865), (835, 87092), (1670, 43546), (3340, 21773)]