21113217

素因数分解:

$3^4\times {\mathrm{277}}^1\times {\mathrm{941}}^1$

素因数の和:1230

約数の個数: 20

約数和(自身を含む): 31686996

約数和(自身を除く): 10573779

約数列:

[1, 3, 9, 27, 81, 277, 831, 941, 2493, 2823, 7479, 8469, 22437, 25407, 76221, 260657, 781971, 2345913, 7037739, 21113217]

約数ペア:

[(1, 21113217), (3, 7037739), (9, 2345913), (27, 781971), (81, 260657), (277, 76221), (831, 25407), (941, 22437), (2493, 8469), (2823, 7479)]