21808713

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{2437}}^1$

素因数の和:2616

約数の個数: 16

約数和(自身を含む): 30816320

約数和(自身を除く): 9007607

約数列:

[1, 3, 19, 57, 157, 471, 2437, 2983, 7311, 8949, 46303, 138909, 382609, 1147827, 7269571, 21808713]

約数ペア:

[(1, 21808713), (3, 7269571), (19, 1147827), (57, 382609), (157, 138909), (471, 46303), (2437, 8949), (2983, 7311)]