21180824

素因数分解:

$2^3\times 7^1\times {\mathrm{378229}}^1$

素因数の和:378242

約数の個数: 16

約数和(自身を含む): 45387600

約数和(自身を除く): 24206776

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 378229, 756458, 1512916, 2647603, 3025832, 5295206, 10590412, 21180824]

約数ペア:

[(1, 21180824), (2, 10590412), (4, 5295206), (7, 3025832), (8, 2647603), (14, 1512916), (28, 756458), (56, 378229)]