18138440

素因数分解:

$2^3\times 5^1\times {\mathrm{453461}}^1$

素因数の和:453472

約数の個数: 16

約数和(自身を含む): 40811580

約数和(自身を除く): 22673140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 453461, 906922, 1813844, 2267305, 3627688, 4534610, 9069220, 18138440]

約数ペア:

[(1, 18138440), (2, 9069220), (4, 4534610), (5, 3627688), (8, 2267305), (10, 1813844), (20, 906922), (40, 453461)]