18610820

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{11779}}^1$

素因数の和:11867

約数の個数: 24

約数和(自身を含む): 39580800

約数和(自身を除く): 20969980

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 11779, 23558, 47116, 58895, 117790, 235580, 930541, 1861082, 3722164, 4652705, 9305410, 18610820]

約数ペア:

[(1, 18610820), (2, 9305410), (4, 4652705), (5, 3722164), (10, 1861082), (20, 930541), (79, 235580), (158, 117790), (316, 58895), (395, 47116), (790, 23558), (1580, 11779)]