18158780

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{2287}}^1$

素因数の和:2693

約数の個数: 24

約数和(自身を含む): 38246208

約数和(自身を除く): 20087428

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 2287, 3970, 4574, 7940, 9148, 11435, 22870, 45740, 907939, 1815878, 3631756, 4539695, 9079390, 18158780]

約数ペア:

[(1, 18158780), (2, 9079390), (4, 4539695), (5, 3631756), (10, 1815878), (20, 907939), (397, 45740), (794, 22870), (1588, 11435), (1985, 9148), (2287, 7940), (3970, 4574)]