20784160

素因数分解:

$2^5\times 5^1\times {\mathrm{129901}}^1$

素因数の和:129916

約数の個数: 24

約数和(自身を含む): 49102956

約数和(自身を除く): 28318796

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 129901, 259802, 519604, 649505, 1039208, 1299010, 2078416, 2598020, 4156832, 5196040, 10392080, 20784160]

約数ペア:

[(1, 20784160), (2, 10392080), (4, 5196040), (5, 4156832), (8, 2598020), (10, 2078416), (16, 1299010), (20, 1039208), (32, 649505), (40, 519604), (80, 259802), (160, 129901)]