1635640

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{397}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 3725280

約数和(自身を除く): 2089640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 397, 412, 515, 794, 824, 1030, 1588, 1985, 2060, 3176, 3970, 4120, 7940, 15880, 40891, 81782, 163564, 204455, 327128, 408910, 817820, 1635640]

約数ペア:

[(1, 1635640), (2, 817820), (4, 408910), (5, 327128), (8, 204455), (10, 163564), (20, 81782), (40, 40891), (103, 15880), (206, 7940), (397, 4120), (412, 3970), (515, 3176), (794, 2060), (824, 1985), (1030, 1588)]