640416621

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{278321}}^1$

素因数の和:278396

約数の個数: 16

約数和(自身を含む): 935161920

約数和(自身を除く): 294745299

約数列:

[1, 3, 13, 39, 59, 177, 767, 2301, 278321, 834963, 3618173, 10854519, 16420939, 49262817, 213472207, 640416621]

約数ペア:

[(1, 640416621), (3, 213472207), (13, 49262817), (39, 16420939), (59, 10854519), (177, 3618173), (767, 834963), (2301, 278321)]