81412840

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{9127}}^1$

素因数の和:9361

約数の個数: 32

約数和(自身を含む): 184020480

約数和(自身を除く): 102607640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 4460, 8920, 9127, 18254, 36508, 45635, 73016, 91270, 182540, 365080, 2035321, 4070642, 8141284, 10176605, 16282568, 20353210, 40706420, 81412840]

約数ペア:

[(1, 81412840), (2, 40706420), (4, 20353210), (5, 16282568), (8, 10176605), (10, 8141284), (20, 4070642), (40, 2035321), (223, 365080), (446, 182540), (892, 91270), (1115, 73016), (1784, 45635), (2230, 36508), (4460, 18254), (8920, 9127)]