915681

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{443}}^1$

素因数の和:512

約数の個数: 16

約数和(自身を含む): 1342656

約数和(自身を除く): 426975

約数列:

[1, 3, 13, 39, 53, 159, 443, 689, 1329, 2067, 5759, 17277, 23479, 70437, 305227, 915681]

約数ペア:

[(1, 915681), (3, 305227), (13, 70437), (39, 23479), (53, 17277), (159, 5759), (443, 2067), (689, 1329)]