139908021

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{21521}}^1$

素因数の和:21732

約数の個数: 16

約数和(自身を含む): 204545088

約数和(自身を除く): 64637067

約数列:

[1, 3, 11, 33, 197, 591, 2167, 6501, 21521, 64563, 236731, 710193, 4239637, 12718911, 46636007, 139908021]

約数ペア:

[(1, 139908021), (3, 46636007), (11, 12718911), (33, 4239637), (197, 710193), (591, 236731), (2167, 64563), (6501, 21521)]