21811518

素因数分解:

$2^1\times 3^4\times {\mathrm{134639}}^1$

素因数の和:134653

約数の個数: 20

約数和(自身を含む): 48874320

約数和(自身を除く): 27062802

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 134639, 269278, 403917, 807834, 1211751, 2423502, 3635253, 7270506, 10905759, 21811518]

約数ペア:

[(1, 21811518), (2, 10905759), (3, 7270506), (6, 3635253), (9, 2423502), (18, 1211751), (27, 807834), (54, 403917), (81, 269278), (162, 134639)]