18719020

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5171}}^1$

素因数の和:5361

約数の個数: 24

約数和(自身を含む): 39534768

約数和(自身を除く): 20815748

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5171, 10342, 20684, 25855, 51710, 103420, 935951, 1871902, 3743804, 4679755, 9359510, 18719020]

約数ペア:

[(1, 18719020), (2, 9359510), (4, 4679755), (5, 3743804), (10, 1871902), (20, 935951), (181, 103420), (362, 51710), (724, 25855), (905, 20684), (1810, 10342), (3620, 5171)]