21505610

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43889}}^1$

素因数の和:43910

約数の個数: 24

約数和(自身を含む): 45031140

約数和(自身を除く): 23525530

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43889, 87778, 219445, 307223, 438890, 614446, 1536115, 2150561, 3072230, 4301122, 10752805, 21505610]

約数ペア:

[(1, 21505610), (2, 10752805), (5, 4301122), (7, 3072230), (10, 2150561), (14, 1536115), (35, 614446), (49, 438890), (70, 307223), (98, 219445), (245, 87778), (490, 43889)]