21128235

素因数分解:

$3^1\times 5^1\times {\mathrm{433}}^1\times {\mathrm{3253}}^1$

素因数の和:3694

約数の個数: 16

約数和(自身を含む): 33893664

約数和(自身を除く): 12765429

約数列:

[1, 3, 5, 15, 433, 1299, 2165, 3253, 6495, 9759, 16265, 48795, 1408549, 4225647, 7042745, 21128235]

約数ペア:

[(1, 21128235), (3, 7042745), (5, 4225647), (15, 1408549), (433, 48795), (1299, 16265), (2165, 9759), (3253, 6495)]