18058180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{128987}}^1$

素因数の和:129003

約数の個数: 24

約数和(自身を含む): 43339968

約数和(自身を除く): 25281788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 128987, 257974, 515948, 644935, 902909, 1289870, 1805818, 2579740, 3611636, 4514545, 9029090, 18058180]

約数ペア:

[(1, 18058180), (2, 9029090), (4, 4514545), (5, 3611636), (7, 2579740), (10, 1805818), (14, 1289870), (20, 902909), (28, 644935), (35, 515948), (70, 257974), (140, 128987)]