20784957

素因数分解:

$3^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{2143}}^1$

素因数の和:2260

約数の個数: 16

約数和(自身を含む): 28712448

約数和(自身を除く): 7927491

約数列:

[1, 3, 53, 61, 159, 183, 2143, 3233, 6429, 9699, 113579, 130723, 340737, 392169, 6928319, 20784957]

約数ペア:

[(1, 20784957), (3, 6928319), (53, 392169), (61, 340737), (159, 130723), (183, 113579), (2143, 9699), (3233, 6429)]