640622090

素因数分解:

$2^1\times 5^1\times {\mathrm{1979}}^1\times {\mathrm{32371}}^1$

素因数の和:34357

約数の個数: 16

約数和(自身を含む): 1153738080

約数和(自身を除く): 513115990

約数列:

[1, 2, 5, 10, 1979, 3958, 9895, 19790, 32371, 64742, 161855, 323710, 64062209, 128124418, 320311045, 640622090]

約数ペア:

[(1, 640622090), (2, 320311045), (5, 128124418), (10, 64062209), (1979, 323710), (3958, 161855), (9895, 64742), (19790, 32371)]