21301189

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1571}}^1$

素因数の和:1740

約数の個数: 16

約数和(自身を含む): 26409600

約数和(自身を除く): 5108411

約数列:

[1, 7, 13, 91, 149, 1043, 1571, 1937, 10997, 13559, 20423, 142961, 234079, 1638553, 3043027, 21301189]

約数ペア:

[(1, 21301189), (7, 3043027), (13, 1638553), (91, 234079), (149, 142961), (1043, 20423), (1571, 13559), (1937, 10997)]