128442020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{917443}}^1$

素因数の和:917459

約数の個数: 24

約数和(自身を含む): 308261184

約数和(自身を除く): 179819164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 917443, 1834886, 3669772, 4587215, 6422101, 9174430, 12844202, 18348860, 25688404, 32110505, 64221010, 128442020]

約数ペア:

[(1, 128442020), (2, 64221010), (4, 32110505), (5, 25688404), (7, 18348860), (10, 12844202), (14, 9174430), (20, 6422101), (28, 4587215), (35, 3669772), (70, 1834886), (140, 917443)]