21044401

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{1249}}^1$

素因数の和:1368

約数の個数: 16

約数和(自身を含む): 25200000

約数和(自身を除く): 4155599

約数列:

[1, 7, 29, 83, 203, 581, 1249, 2407, 8743, 16849, 36221, 103667, 253547, 725669, 3006343, 21044401]

約数ペア:

[(1, 21044401), (7, 3006343), (29, 725669), (83, 253547), (203, 103667), (581, 36221), (1249, 16849), (2407, 8743)]