21597020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{13669}}^1$

素因数の和:13757

約数の個数: 24

約数和(自身を含む): 45931200

約数和(自身を除く): 24334180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 13669, 27338, 54676, 68345, 136690, 273380, 1079851, 2159702, 4319404, 5399255, 10798510, 21597020]

約数ペア:

[(1, 21597020), (2, 10798510), (4, 5399255), (5, 4319404), (10, 2159702), (20, 1079851), (79, 273380), (158, 136690), (316, 68345), (395, 54676), (790, 27338), (1580, 13669)]