156439280

素因数分解:

$2^4\times 5^1\times {\mathrm{1955491}}^1$

素因数の和:1955504

約数の個数: 20

約数和(自身を含む): 363721512

約数和(自身を除く): 207282232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1955491, 3910982, 7821964, 9777455, 15643928, 19554910, 31287856, 39109820, 78219640, 156439280]

約数ペア:

[(1, 156439280), (2, 78219640), (4, 39109820), (5, 31287856), (8, 19554910), (10, 15643928), (16, 9777455), (20, 7821964), (40, 3910982), (80, 1955491)]