16856245

素因数分解:

$5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{643}}^1$

素因数の和:769

約数の個数: 24

約数和(自身を含む): 23786784

約数和(自身を除く): 6930539

約数列:

[1, 5, 7, 35, 49, 107, 245, 535, 643, 749, 3215, 3745, 4501, 5243, 22505, 26215, 31507, 68801, 157535, 344005, 481607, 2408035, 3371249, 16856245]

約数ペア:

[(1, 16856245), (5, 3371249), (7, 2408035), (35, 481607), (49, 344005), (107, 157535), (245, 68801), (535, 31507), (643, 26215), (749, 22505), (3215, 5243), (3745, 4501)]