21031720209

素因数分解:

$3^2\times {\mathrm{6791}}^1\times {\mathrm{344111}}^1$

素因数の和:350908

約数の個数: 12

約数和(自身を含む): 30383713152

約数和(自身を除く): 9351992943

約数列:

[1, 3, 9, 6791, 20373, 61119, 344111, 1032333, 3096999, 2336857801, 7010573403, 21031720209]

約数ペア:

[(1, 21031720209), (3, 7010573403), (9, 2336857801), (6791, 3096999), (20373, 1032333), (61119, 344111)]