640793783

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{977}}^1\times {\mathrm{2179}}^1$

素因数の和:3206

約数の個数: 16

約数和(自身を含む): 750478080

約数和(自身を除く): 109684297

約数列:

[1, 7, 43, 301, 977, 2179, 6839, 15253, 42011, 93697, 294077, 655879, 2128883, 14902181, 91541969, 640793783]

約数ペア:

[(1, 640793783), (7, 91541969), (43, 14902181), (301, 2128883), (977, 655879), (2179, 294077), (6839, 93697), (15253, 42011)]