842540

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{409}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 1790880

約数和(自身を除く): 948340

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 409, 412, 515, 818, 1030, 1636, 2045, 2060, 4090, 8180, 42127, 84254, 168508, 210635, 421270, 842540]

約数ペア:

[(1, 842540), (2, 421270), (4, 210635), (5, 168508), (10, 84254), (20, 42127), (103, 8180), (206, 4090), (409, 2060), (412, 2045), (515, 1636), (818, 1030)]