21064935

素因数分解:

$3^1\times 5^1\times {\mathrm{659}}^1\times {\mathrm{2131}}^1$

素因数の和:2798

約数の個数: 16

約数和(自身を含む): 33770880

約数和(自身を除く): 12705945

約数列:

[1, 3, 5, 15, 659, 1977, 2131, 3295, 6393, 9885, 10655, 31965, 1404329, 4212987, 7021645, 21064935]

約数ペア:

[(1, 21064935), (3, 7021645), (5, 4212987), (15, 1404329), (659, 31965), (1977, 10655), (2131, 9885), (3295, 6393)]