18840410

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21169}}^1$

素因数の和:21265

約数の個数: 16

約数和(自身を含む): 34295400

約数和(自身を除く): 15454990

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 21169, 42338, 105845, 211690, 1884041, 3768082, 9420205, 18840410]

約数ペア:

[(1, 18840410), (2, 9420205), (5, 3768082), (10, 1884041), (89, 211690), (178, 105845), (445, 42338), (890, 21169)]