21504979

素因数分解:

${\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1259}}^1$

素因数の和:1338

約数の個数: 16

約数和(自身を含む): 24192000

約数和(自身を除く): 2687021

約数列:

[1, 19, 29, 31, 551, 589, 899, 1259, 17081, 23921, 36511, 39029, 693709, 741551, 1131841, 21504979]

約数ペア:

[(1, 21504979), (19, 1131841), (29, 741551), (31, 693709), (551, 39029), (589, 36511), (899, 23921), (1259, 17081)]