21380170

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{43633}}^1$

素因数の和:43654

約数の個数: 24

約数和(自身を含む): 44768484

約数和(自身を除く): 23388314

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 43633, 87266, 218165, 305431, 436330, 610862, 1527155, 2138017, 3054310, 4276034, 10690085, 21380170]

約数ペア:

[(1, 21380170), (2, 10690085), (5, 4276034), (7, 3054310), (10, 2138017), (14, 1527155), (35, 610862), (49, 436330), (70, 305431), (98, 218165), (245, 87266), (490, 43633)]