21288993

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{3863}}^1$

素因数の和:4044

約数の個数: 16

約数和(自身を含む): 31159296

約数和(自身を除く): 9870303

約数列:

[1, 3, 11, 33, 167, 501, 1837, 3863, 5511, 11589, 42493, 127479, 645121, 1935363, 7096331, 21288993]

約数ペア:

[(1, 21288993), (3, 7096331), (11, 1935363), (33, 645121), (167, 127479), (501, 42493), (1837, 11589), (3863, 5511)]