21888979

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1\times {\mathrm{439}}^1$

素因数の和:882

約数の個数: 16

約数和(自身を含む): 26611200

約数和(自身を除く): 4722221

約数列:

[1, 7, 17, 119, 419, 439, 2933, 3073, 7123, 7463, 49861, 52241, 183941, 1287587, 3126997, 21888979]

約数ペア:

[(1, 21888979), (7, 3126997), (17, 1287587), (119, 183941), (419, 52241), (439, 49861), (2933, 7463), (3073, 7123)]