21026860

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{22369}}^1$

素因数の和:22425

約数の個数: 24

約数和(自身を含む): 45097920

約数和(自身を除く): 24071060

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 22369, 44738, 89476, 111845, 223690, 447380, 1051343, 2102686, 4205372, 5256715, 10513430, 21026860]

約数ペア:

[(1, 21026860), (2, 10513430), (4, 5256715), (5, 4205372), (10, 2102686), (20, 1051343), (47, 447380), (94, 223690), (188, 111845), (235, 89476), (470, 44738), (940, 22369)]