21556857

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{25037}}^1$

素因数の和:25088

約数の個数: 16

約数和(自身を含む): 33651072

約数和(自身を除く): 12094215

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 25037, 75111, 175259, 525777, 1026517, 3079551, 7185619, 21556857]

約数ペア:

[(1, 21556857), (3, 7185619), (7, 3079551), (21, 1026517), (41, 525777), (123, 175259), (287, 75111), (861, 25037)]