1280976880

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{372377}}^1$

素因数の和:372433

約数の個数: 40

約数和(自身を含む): 3047541552

約数和(自身を除く): 1766564672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 372377, 744754, 1489508, 1861885, 2979016, 3723770, 5958032, 7447540, 14895080, 16012211, 29790160, 32024422, 64048844, 80061055, 128097688, 160122110, 256195376, 320244220, 640488440, 1280976880]

約数ペア:

[(1, 1280976880), (2, 640488440), (4, 320244220), (5, 256195376), (8, 160122110), (10, 128097688), (16, 80061055), (20, 64048844), (40, 32024422), (43, 29790160), (80, 16012211), (86, 14895080), (172, 7447540), (215, 5958032), (344, 3723770), (430, 2979016), (688, 1861885), (860, 1489508), (1720, 744754), (3440, 372377)]