21136843

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{647}}^1$

素因数の和:1026

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 4990517

約数列:

[1, 7, 13, 91, 359, 647, 2513, 4529, 4667, 8411, 32669, 58877, 232273, 1625911, 3019549, 21136843]

約数ペア:

[(1, 21136843), (7, 3019549), (13, 1625911), (91, 232273), (359, 58877), (647, 32669), (2513, 8411), (4529, 4667)]