21354315

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{20051}}^1$

素因数の和:20130

約数の個数: 16

約数和(自身を含む): 34649856

約数和(自身を除く): 13295541

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 20051, 60153, 100255, 300765, 1423621, 4270863, 7118105, 21354315]

約数ペア:

[(1, 21354315), (3, 7118105), (5, 4270863), (15, 1423621), (71, 300765), (213, 100255), (355, 60153), (1065, 20051)]