18856580

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5209}}^1$

素因数の和:5399

約数の個数: 24

約数和(自身を含む): 39825240

約数和(自身を除く): 20968660

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5209, 10418, 20836, 26045, 52090, 104180, 942829, 1885658, 3771316, 4714145, 9428290, 18856580]

約数ペア:

[(1, 18856580), (2, 9428290), (4, 4714145), (5, 3771316), (10, 1885658), (20, 942829), (181, 104180), (362, 52090), (724, 26045), (905, 20836), (1810, 10418), (3620, 5209)]