21713885

素因数分解:

$5^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:500

約数の個数: 16

約数和(自身を含む): 26544000

約数和(自身を除く): 4830115

約数列:

[1, 5, 139, 157, 199, 695, 785, 995, 21823, 27661, 31243, 109115, 138305, 156215, 4342777, 21713885]

約数ペア:

[(1, 21713885), (5, 4342777), (139, 156215), (157, 138305), (199, 109115), (695, 31243), (785, 27661), (995, 21823)]