80792720

素因数分解:

$2^4\times 5^1\times {\mathrm{1009909}}^1$

素因数の和:1009922

約数の個数: 20

約数和(自身を含む): 187843260

約数和(自身を除く): 107050540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1009909, 2019818, 4039636, 5049545, 8079272, 10099090, 16158544, 20198180, 40396360, 80792720]

約数ペア:

[(1, 80792720), (2, 40396360), (4, 20198180), (5, 16158544), (8, 10099090), (10, 8079272), (16, 5049545), (20, 4039636), (40, 2019818), (80, 1009909)]