21124089

素因数分解:

$3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{1013}}^1$

素因数の和:1357

約数の個数: 24

約数和(自身を含む): 35011392

約数和(自身を除く): 13887303

約数列:

[1, 3, 7, 9, 21, 63, 331, 993, 1013, 2317, 2979, 3039, 6951, 7091, 9117, 20853, 21273, 63819, 335303, 1005909, 2347121, 3017727, 7041363, 21124089]

約数ペア:

[(1, 21124089), (3, 7041363), (7, 3017727), (9, 2347121), (21, 1005909), (63, 335303), (331, 63819), (993, 21273), (1013, 20853), (2317, 9117), (2979, 7091), (3039, 6951)]