80405840

素因数分解:

$2^4\times 5^1\times {\mathrm{1005073}}^1$

素因数の和:1005086

約数の個数: 20

約数和(自身を含む): 186943764

約数和(自身を除く): 106537924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1005073, 2010146, 4020292, 5025365, 8040584, 10050730, 16081168, 20101460, 40202920, 80405840]

約数ペア:

[(1, 80405840), (2, 40202920), (4, 20101460), (5, 16081168), (8, 10050730), (10, 8040584), (16, 5025365), (20, 4020292), (40, 2010146), (80, 1005073)]