40712720

素因数分解:

$2^4\times 5^1\times {\mathrm{508909}}^1$

素因数の和:508922

約数の個数: 20

約数和(自身を含む): 94657260

約数和(自身を除く): 53944540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 508909, 1017818, 2035636, 2544545, 4071272, 5089090, 8142544, 10178180, 20356360, 40712720]

約数ペア:

[(1, 40712720), (2, 20356360), (4, 10178180), (5, 8142544), (8, 5089090), (10, 4071272), (16, 2544545), (20, 2035636), (40, 1017818), (80, 508909)]