21177268

素因数分解:

$2^2\times 7^1\times {\mathrm{756331}}^1$

素因数の和:756342

約数の個数: 12

約数和(自身を含む): 42354592

約数和(自身を除く): 21177324

約数列:

[1, 2, 4, 7, 14, 28, 756331, 1512662, 3025324, 5294317, 10588634, 21177268]

約数ペア:

[(1, 21177268), (2, 10588634), (4, 5294317), (7, 3025324), (14, 1512662), (28, 756331)]