20785569

素因数分解:

$3^1\times 7^1\times {\mathrm{557}}^1\times {\mathrm{1777}}^1$

素因数の和:2344

約数の個数: 16

約数和(自身を含む): 31747968

約数和(自身を除く): 10962399

約数列:

[1, 3, 7, 21, 557, 1671, 1777, 3899, 5331, 11697, 12439, 37317, 989789, 2969367, 6928523, 20785569]

約数ペア:

[(1, 20785569), (3, 6928523), (7, 2969367), (21, 989789), (557, 37317), (1671, 12439), (1777, 11697), (3899, 5331)]