18413620

素因数分解:

$2^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1423}}^1$

素因数の和:2079

約数の個数: 24

約数和(自身を含む): 38755584

約数和(自身を除く): 20341964

約数列:

[1, 2, 4, 5, 10, 20, 647, 1294, 1423, 2588, 2846, 3235, 5692, 6470, 7115, 12940, 14230, 28460, 920681, 1841362, 3682724, 4603405, 9206810, 18413620]

約数ペア:

[(1, 18413620), (2, 9206810), (4, 4603405), (5, 3682724), (10, 1841362), (20, 920681), (647, 28460), (1294, 14230), (1423, 12940), (2588, 7115), (2846, 6470), (3235, 5692)]