21897967

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{727}}^1$

素因数の和:1078

約数の個数: 16

約数和(自身を含む): 27069952

約数和(自身を除く): 5171985

約数列:

[1, 7, 13, 91, 331, 727, 2317, 4303, 5089, 9451, 30121, 66157, 240637, 1684459, 3128281, 21897967]

約数ペア:

[(1, 21897967), (7, 3128281), (13, 1684459), (91, 240637), (331, 66157), (727, 30121), (2317, 9451), (4303, 5089)]