21904845

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{33961}}^1$

素因数の和:34012

約数の個数: 16

約数和(自身を含む): 35863872

約数和(自身を除く): 13959027

約数列:

[1, 3, 5, 15, 43, 129, 215, 645, 33961, 101883, 169805, 509415, 1460323, 4380969, 7301615, 21904845]

約数ペア:

[(1, 21904845), (3, 7301615), (5, 4380969), (15, 1460323), (43, 509415), (129, 169805), (215, 101883), (645, 33961)]