28154680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16369}}^1$

素因数の和:16423

約数の個数: 32

約数和(自身を含む): 64825200

約数和(自身を除く): 36670520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16369, 32738, 65476, 81845, 130952, 163690, 327380, 654760, 703867, 1407734, 2815468, 3519335, 5630936, 7038670, 14077340, 28154680]

約数ペア:

[(1, 28154680), (2, 14077340), (4, 7038670), (5, 5630936), (8, 3519335), (10, 2815468), (20, 1407734), (40, 703867), (43, 654760), (86, 327380), (172, 163690), (215, 130952), (344, 81845), (430, 65476), (860, 32738), (1720, 16369)]