18563620

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10429}}^1$

素因数の和:10527

約数の個数: 24

約数和(自身を含む): 39425400

約数和(自身を除く): 20861780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10429, 20858, 41716, 52145, 104290, 208580, 928181, 1856362, 3712724, 4640905, 9281810, 18563620]

約数ペア:

[(1, 18563620), (2, 9281810), (4, 4640905), (5, 3712724), (10, 1856362), (20, 928181), (89, 208580), (178, 104290), (356, 52145), (445, 41716), (890, 20858), (1780, 10429)]