128311540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{916511}}^1$

素因数の和:916527

約数の個数: 24

約数和(自身を含む): 307948032

約数和(自身を除く): 179636492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 916511, 1833022, 3666044, 4582555, 6415577, 9165110, 12831154, 18330220, 25662308, 32077885, 64155770, 128311540]

約数ペア:

[(1, 128311540), (2, 64155770), (4, 32077885), (5, 25662308), (7, 18330220), (10, 12831154), (14, 9165110), (20, 6415577), (28, 4582555), (35, 3666044), (70, 1833022), (140, 916511)]