20748357

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5399}}^1$

素因数の和:5473

約数の個数: 24

約数和(自身を含む): 34819200

約数和(自身を除く): 14070843

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5399, 16197, 37793, 48591, 113379, 329339, 340137, 988017, 2305373, 2964051, 6916119, 20748357]

約数ペア:

[(1, 20748357), (3, 6916119), (7, 2964051), (9, 2305373), (21, 988017), (61, 340137), (63, 329339), (183, 113379), (427, 48591), (549, 37793), (1281, 16197), (3843, 5399)]