872720

素因数分解:

$2^4\times 5^1\times {\mathrm{10909}}^1$

素因数の和:10922

約数の個数: 20

約数和(自身を含む): 2029260

約数和(自身を除く): 1156540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10909, 21818, 43636, 54545, 87272, 109090, 174544, 218180, 436360, 872720]

約数ペア:

[(1, 872720), (2, 436360), (4, 218180), (5, 174544), (8, 109090), (10, 87272), (16, 54545), (20, 43636), (40, 21818), (80, 10909)]