16815440

素因数分解:

$2^4\times 5^1\times {\mathrm{210193}}^1$

素因数の和:210206

約数の個数: 20

約数和(自身を含む): 39096084

約数和(自身を除く): 22280644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 210193, 420386, 840772, 1050965, 1681544, 2101930, 3363088, 4203860, 8407720, 16815440]

約数ペア:

[(1, 16815440), (2, 8407720), (4, 4203860), (5, 3363088), (8, 2101930), (10, 1681544), (16, 1050965), (20, 840772), (40, 420386), (80, 210193)]