40765520

素因数分解:

$2^4\times 5^1\times {\mathrm{509569}}^1$

素因数の和:509582

約数の個数: 20

約数和(自身を含む): 94780020

約数和(自身を除く): 54014500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509569, 1019138, 2038276, 2547845, 4076552, 5095690, 8153104, 10191380, 20382760, 40765520]

約数ペア:

[(1, 40765520), (2, 20382760), (4, 10191380), (5, 8153104), (8, 5095690), (10, 4076552), (16, 2547845), (20, 2038276), (40, 1019138), (80, 509569)]