21288684

素因数分解:

$2^2\times 3^1\times {\mathrm{139}}^1\times {\mathrm{12763}}^1$

素因数の和:12909

約数の個数: 24

約数和(自身を含む): 50034880

約数和(自身を除く): 28746196

約数列:

[1, 2, 3, 4, 6, 12, 139, 278, 417, 556, 834, 1668, 12763, 25526, 38289, 51052, 76578, 153156, 1774057, 3548114, 5322171, 7096228, 10644342, 21288684]

約数ペア:

[(1, 21288684), (2, 10644342), (3, 7096228), (4, 5322171), (6, 3548114), (12, 1774057), (139, 153156), (278, 76578), (417, 51052), (556, 38289), (834, 25526), (1668, 12763)]