21190808

素因数分解:

$2^3\times {\mathrm{103}}^1\times {\mathrm{25717}}^1$

素因数の和:25826

約数の個数: 16

約数和(自身を含む): 40120080

約数和(自身を除く): 18929272

約数列:

[1, 2, 4, 8, 103, 206, 412, 824, 25717, 51434, 102868, 205736, 2648851, 5297702, 10595404, 21190808]

約数ペア:

[(1, 21190808), (2, 10595404), (4, 5297702), (8, 2648851), (103, 205736), (206, 102868), (412, 51434), (824, 25717)]