20993865

素因数分解:

$3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{10069}}^1$

素因数の和:10216

約数の個数: 16

約数和(自身を含む): 33835200

約数和(自身を除く): 12841335

約数列:

[1, 3, 5, 15, 139, 417, 695, 2085, 10069, 30207, 50345, 151035, 1399591, 4198773, 6997955, 20993865]

約数ペア:

[(1, 20993865), (3, 6997955), (5, 4198773), (15, 1399591), (139, 151035), (417, 50345), (695, 30207), (2085, 10069)]