18990670

素因数分解:

$2^1\times 5^1\times {\mathrm{887}}^1\times {\mathrm{2141}}^1$

素因数の和:3035

約数の個数: 16

約数和(自身を含む): 34237728

約数和(自身を除く): 15247058

約数列:

[1, 2, 5, 10, 887, 1774, 2141, 4282, 4435, 8870, 10705, 21410, 1899067, 3798134, 9495335, 18990670]

約数ペア:

[(1, 18990670), (2, 9495335), (5, 3798134), (10, 1899067), (887, 21410), (1774, 10705), (2141, 8870), (4282, 4435)]