217793009

素因数分解:

$7^1\times {\mathrm{109}}^1\times {\mathrm{397}}^1\times {\mathrm{719}}^1$

素因数の和:1232

約数の個数: 16

約数和(自身を含む): 252172800

約数和(自身を除く): 34379791

約数列:

[1, 7, 109, 397, 719, 763, 2779, 5033, 43273, 78371, 285443, 302911, 548597, 1998101, 31113287, 217793009]

約数ペア:

[(1, 217793009), (7, 31113287), (109, 1998101), (397, 548597), (719, 302911), (763, 285443), (2779, 78371), (5033, 43273)]