128818160

素因数分解:

$2^4\times 5^1\times {\mathrm{1610227}}^1$

素因数の和:1610240

約数の個数: 20

約数和(自身を含む): 299502408

約数和(自身を除く): 170684248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1610227, 3220454, 6440908, 8051135, 12881816, 16102270, 25763632, 32204540, 64409080, 128818160]

約数ペア:

[(1, 128818160), (2, 64409080), (4, 32204540), (5, 25763632), (8, 16102270), (10, 12881816), (16, 8051135), (20, 6440908), (40, 3220454), (80, 1610227)]