817820

素因数分解:

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

素因数の和:509

約数の個数: 24

約数和(自身を含む): 1738464

約数和(自身を除く): 920644

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 397, 412, 515, 794, 1030, 1588, 1985, 2060, 3970, 7940, 40891, 81782, 163564, 204455, 408910, 817820]

約数ペア:

[(1, 817820), (2, 408910), (4, 204455), (5, 163564), (10, 81782), (20, 40891), (103, 7940), (206, 3970), (397, 2060), (412, 1985), (515, 1588), (794, 1030)]