8647880

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2099}}^1$

素因数の和:2213

約数の個数: 32

約数和(自身を含む): 19656000

約数和(自身を除く): 11008120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 2099, 4120, 4198, 8396, 10495, 16792, 20990, 41980, 83960, 216197, 432394, 864788, 1080985, 1729576, 2161970, 4323940, 8647880]

約数ペア:

[(1, 8647880), (2, 4323940), (4, 2161970), (5, 1729576), (8, 1080985), (10, 864788), (20, 432394), (40, 216197), (103, 83960), (206, 41980), (412, 20990), (515, 16792), (824, 10495), (1030, 8396), (2060, 4198), (2099, 4120)]