21054843

素因数分解:

$3^3\times {\mathrm{79}}^1\times {\mathrm{9871}}^1$

素因数の和:9959

約数の個数: 16

約数和(自身を含む): 31590400

約数和(自身を除く): 10535557

約数列:

[1, 3, 9, 27, 79, 237, 711, 2133, 9871, 29613, 88839, 266517, 779809, 2339427, 7018281, 21054843]

約数ペア:

[(1, 21054843), (3, 7018281), (9, 2339427), (27, 779809), (79, 266517), (237, 88839), (711, 29613), (2133, 9871)]