21791216

素因数分解:

$2^4\times {\mathrm{1031}}^1\times {\mathrm{1321}}^1$

素因数の和:2360

約数の個数: 20

約数和(自身を含む): 42293424

約数和(自身を除く): 20502208

約数列:

[1, 2, 4, 8, 16, 1031, 1321, 2062, 2642, 4124, 5284, 8248, 10568, 16496, 21136, 1361951, 2723902, 5447804, 10895608, 21791216]

約数ペア:

[(1, 21791216), (2, 10895608), (4, 5447804), (8, 2723902), (16, 1361951), (1031, 21136), (1321, 16496), (2062, 10568), (2642, 8248), (4124, 5284)]