21051580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8699}}^1$

素因数の和:8730

約数の個数: 36

約数和(自身を含む): 48598200

約数和(自身を除く): 27546620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8699, 17398, 34796, 43495, 86990, 95689, 173980, 191378, 382756, 478445, 956890, 1052579, 1913780, 2105158, 4210316, 5262895, 10525790, 21051580]

約数ペア:

[(1, 21051580), (2, 10525790), (4, 5262895), (5, 4210316), (10, 2105158), (11, 1913780), (20, 1052579), (22, 956890), (44, 478445), (55, 382756), (110, 191378), (121, 173980), (220, 95689), (242, 86990), (484, 43495), (605, 34796), (1210, 17398), (2420, 8699)]