18289940

素因数分解:

$2^2\times 5^1\times {\mathrm{887}}^1\times {\mathrm{1031}}^1$

素因数の和:1927

約数の個数: 24

約数和(自身を含む): 38489472

約数和(自身を除く): 20199532

約数列:

[1, 2, 4, 5, 10, 20, 887, 1031, 1774, 2062, 3548, 4124, 4435, 5155, 8870, 10310, 17740, 20620, 914497, 1828994, 3657988, 4572485, 9144970, 18289940]

約数ペア:

[(1, 18289940), (2, 9144970), (4, 4572485), (5, 3657988), (10, 1828994), (20, 914497), (887, 20620), (1031, 17740), (1774, 10310), (2062, 8870), (3548, 5155), (4124, 4435)]