131221160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{468647}}^1$

素因数の和:468665

約数の個数: 32

約数和(自身を含む): 337426560

約数和(自身を除く): 206205400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 468647, 937294, 1874588, 2343235, 3280529, 3749176, 4686470, 6561058, 9372940, 13122116, 16402645, 18745880, 26244232, 32805290, 65610580, 131221160]

約数ペア:

[(1, 131221160), (2, 65610580), (4, 32805290), (5, 26244232), (7, 18745880), (8, 16402645), (10, 13122116), (14, 9372940), (20, 6561058), (28, 4686470), (35, 3749176), (40, 3280529), (56, 2343235), (70, 1874588), (140, 937294), (280, 468647)]