18861770

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21193}}^1$

素因数の和:21289

約数の個数: 16

約数和(自身を含む): 34334280

約数和(自身を除く): 15472510

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 21193, 42386, 105965, 211930, 1886177, 3772354, 9430885, 18861770]

約数ペア:

[(1, 18861770), (2, 9430885), (5, 3772354), (10, 1886177), (89, 211930), (178, 105965), (445, 42386), (890, 21193)]