20698180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3581}}^1$

素因数の和:3624

約数の個数: 36

約数和(自身を含む): 46186308

約数和(自身を除く): 25488128

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3581, 5780, 7162, 14324, 17905, 35810, 60877, 71620, 121754, 243508, 304385, 608770, 1034909, 1217540, 2069818, 4139636, 5174545, 10349090, 20698180]

約数ペア:

[(1, 20698180), (2, 10349090), (4, 5174545), (5, 4139636), (10, 2069818), (17, 1217540), (20, 1034909), (34, 608770), (68, 304385), (85, 243508), (170, 121754), (289, 71620), (340, 60877), (578, 35810), (1156, 17905), (1445, 14324), (2890, 7162), (3581, 5780)]