64890865

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{647}}^1\times {\mathrm{1543}}^1$

素因数の和:2208

約数の個数: 16

約数和(自身を含む): 84043008

約数和(自身を除く): 19152143

約数列:

[1, 5, 13, 65, 647, 1543, 3235, 7715, 8411, 20059, 42055, 100295, 998321, 4991605, 12978173, 64890865]

約数ペア:

[(1, 64890865), (5, 12978173), (13, 4991605), (65, 998321), (647, 100295), (1543, 42055), (3235, 20059), (7715, 8411)]