6721421

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{521}}^1$

素因数の和:644

約数の個数: 16

約数和(自身を含む): 8184960

約数和(自身を除く): 1463539

約数列:

[1, 7, 19, 97, 133, 521, 679, 1843, 3647, 9899, 12901, 50537, 69293, 353759, 960203, 6721421]

約数ペア:

[(1, 6721421), (7, 960203), (19, 353759), (97, 69293), (133, 50537), (521, 12901), (679, 9899), (1843, 3647)]