164057680

素因数分解:

$2^4\times 5^1\times {\mathrm{2050721}}^1$

素因数の和:2050734

約数の個数: 20

約数和(自身を含む): 381434292

約数和(自身を除く): 217376612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2050721, 4101442, 8202884, 10253605, 16405768, 20507210, 32811536, 41014420, 82028840, 164057680]

約数ペア:

[(1, 164057680), (2, 82028840), (4, 41014420), (5, 32811536), (8, 20507210), (10, 16405768), (16, 10253605), (20, 8202884), (40, 4101442), (80, 2050721)]