18784180

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5189}}^1$

素因数の和:5379

約数の個数: 24

約数和(自身を含む): 39672360

約数和(自身を除く): 20888180

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 5189, 10378, 20756, 25945, 51890, 103780, 939209, 1878418, 3756836, 4696045, 9392090, 18784180]

約数ペア:

[(1, 18784180), (2, 9392090), (4, 4696045), (5, 3756836), (10, 1878418), (20, 939209), (181, 103780), (362, 51890), (724, 25945), (905, 20756), (1810, 10378), (3620, 5189)]