408092180

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{397}}^1\times {\mathrm{499}}^1$

素因数の和:1008

約数の個数: 48

約数和(自身を含む): 869232000

約数和(自身を除く): 461139820

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 397, 412, 499, 515, 794, 998, 1030, 1588, 1985, 1996, 2060, 2495, 3970, 4990, 7940, 9980, 40891, 51397, 81782, 102794, 163564, 198103, 204455, 205588, 256985, 396206, 408910, 513970, 792412, 817820, 990515, 1027940, 1981030, 3962060, 20404609, 40809218, 81618436, 102023045, 204046090, 408092180]

約数ペア:

[(1, 408092180), (2, 204046090), (4, 102023045), (5, 81618436), (10, 40809218), (20, 20404609), (103, 3962060), (206, 1981030), (397, 1027940), (412, 990515), (499, 817820), (515, 792412), (794, 513970), (998, 408910), (1030, 396206), (1588, 256985), (1985, 205588), (1996, 204455), (2060, 198103), (2495, 163564), (3970, 102794), (4990, 81782), (7940, 51397), (9980, 40891)]