1807720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1051}}^1$

素因数の和:1105

約数の個数: 32

約数和(自身を含む): 4165920

約数和(自身を除く): 2358200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1051, 1720, 2102, 4204, 5255, 8408, 10510, 21020, 42040, 45193, 90386, 180772, 225965, 361544, 451930, 903860, 1807720]

約数ペア:

[(1, 1807720), (2, 903860), (4, 451930), (5, 361544), (8, 225965), (10, 180772), (20, 90386), (40, 45193), (43, 42040), (86, 21020), (172, 10510), (215, 8408), (344, 5255), (430, 4204), (860, 2102), (1051, 1720)]