18537940

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{8999}}^1$

素因数の和:9111

約数の個数: 24

約数和(自身を含む): 39312000

約数和(自身を除く): 20774060

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 8999, 17998, 35996, 44995, 89990, 179980, 926897, 1853794, 3707588, 4634485, 9268970, 18537940]

約数ペア:

[(1, 18537940), (2, 9268970), (4, 4634485), (5, 3707588), (10, 1853794), (20, 926897), (103, 179980), (206, 89990), (412, 44995), (515, 35996), (1030, 17998), (2060, 8999)]