21199208

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{43441}}^1$

素因数の和:43508

約数の個数: 16

約数和(自身を含む): 40401060

約数和(自身を除く): 19201852

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 43441, 86882, 173764, 347528, 2649901, 5299802, 10599604, 21199208]

約数ペア:

[(1, 21199208), (2, 10599604), (4, 5299802), (8, 2649901), (61, 347528), (122, 173764), (244, 86882), (488, 43441)]