18991112

素因数分解:

$2^3\times 7^1\times {\mathrm{339127}}^1$

素因数の和:339140

約数の個数: 16

約数和(自身を含む): 40695360

約数和(自身を除く): 21704248

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 339127, 678254, 1356508, 2373889, 2713016, 4747778, 9495556, 18991112]

約数ペア:

[(1, 18991112), (2, 9495556), (4, 4747778), (7, 2713016), (8, 2373889), (14, 1356508), (28, 678254), (56, 339127)]