20855895

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19583}}^1$

素因数の和:19662

約数の個数: 16

約数和(自身を含む): 33841152

約数和(自身を除く): 12985257

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 19583, 58749, 97915, 293745, 1390393, 4171179, 6951965, 20855895]

約数ペア:

[(1, 20855895), (3, 6951965), (5, 4171179), (15, 1390393), (71, 293745), (213, 97915), (355, 58749), (1065, 19583)]