21717995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{7109}}^1$

素因数の和:7174

約数の個数: 16

約数和(自身を含む): 28667520

約数和(自身を除く): 6949525

約数列:

[1, 5, 13, 47, 65, 235, 611, 3055, 7109, 35545, 92417, 334123, 462085, 1670615, 4343599, 21717995]

約数ペア:

[(1, 21717995), (5, 4343599), (13, 1670615), (47, 462085), (65, 334123), (235, 92417), (611, 35545), (3055, 7109)]