640887149

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{18119}}^1$

素因数の和:18320

約数の個数: 16

約数和(自身を含む): 760750080

約数和(自身を除く): 119862931

約数列:

[1, 7, 31, 163, 217, 1141, 5053, 18119, 35371, 126833, 561689, 2953397, 3931823, 20673779, 91555307, 640887149]

約数ペア:

[(1, 640887149), (7, 91555307), (31, 20673779), (163, 3931823), (217, 2953397), (1141, 561689), (5053, 126833), (18119, 35371)]