666120670

素因数分解:

$2^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{315697}}^1$

素因数の和:315915

約数の個数: 16

約数和(自身を含む): 1204703568

約数和(自身を除く): 538582898

約数列:

[1, 2, 5, 10, 211, 422, 1055, 2110, 315697, 631394, 1578485, 3156970, 66612067, 133224134, 333060335, 666120670]

約数ペア:

[(1, 666120670), (2, 333060335), (5, 133224134), (10, 66612067), (211, 3156970), (422, 1578485), (1055, 631394), (2110, 315697)]