18338120

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4451}}^1$

素因数の和:4565

約数の個数: 32

約数和(自身を含む): 41670720

約数和(自身を除く): 23332600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4451, 8902, 17804, 22255, 35608, 44510, 89020, 178040, 458453, 916906, 1833812, 2292265, 3667624, 4584530, 9169060, 18338120]

約数ペア:

[(1, 18338120), (2, 9169060), (4, 4584530), (5, 3667624), (8, 2292265), (10, 1833812), (20, 916906), (40, 458453), (103, 178040), (206, 89020), (412, 44510), (515, 35608), (824, 22255), (1030, 17804), (2060, 8902), (4120, 4451)]