211760

素因数分解:

$2^4\times 5^1\times {\mathrm{2647}}^1$

素因数の和:2660

約数の個数: 20

約数和(自身を含む): 492528

約数和(自身を除く): 280768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2647, 5294, 10588, 13235, 21176, 26470, 42352, 52940, 105880, 211760]

約数ペア:

[(1, 211760), (2, 105880), (4, 52940), (5, 42352), (8, 26470), (10, 21176), (16, 13235), (20, 10588), (40, 5294), (80, 2647)]