128774080

素因数分解:

$2^6\times 5^1\times {\mathrm{402419}}^1$

素因数の和:402436

約数の個数: 28

約数和(自身を含む): 306644040

約数和(自身を除く): 177869960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 402419, 804838, 1609676, 2012095, 3219352, 4024190, 6438704, 8048380, 12877408, 16096760, 25754816, 32193520, 64387040, 128774080]

約数ペア:

[(1, 128774080), (2, 64387040), (4, 32193520), (5, 25754816), (8, 16096760), (10, 12877408), (16, 8048380), (20, 6438704), (32, 4024190), (40, 3219352), (64, 2012095), (80, 1609676), (160, 804838), (320, 402419)]