21125713

素因数分解:

$7^3\times {\mathrm{17}}^1\times {\mathrm{3623}}^1$

素因数の和:3661

約数の個数: 16

約数和(自身を含む): 26092800

約数和(自身を除く): 4967087

約数列:

[1, 7, 17, 49, 119, 343, 833, 3623, 5831, 25361, 61591, 177527, 431137, 1242689, 3017959, 21125713]

約数ペア:

[(1, 21125713), (7, 3017959), (17, 1242689), (49, 431137), (119, 177527), (343, 61591), (833, 25361), (3623, 5831)]