21942171

素因数分解:

$3^7\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:227

約数の個数: 32

約数和(自身を含む): 33587200

約数和(自身を除く): 11645029

約数列:

[1, 3, 9, 27, 79, 81, 127, 237, 243, 381, 711, 729, 1143, 2133, 2187, 3429, 6399, 10033, 10287, 19197, 30099, 30861, 57591, 90297, 92583, 172773, 270891, 277749, 812673, 2438019, 7314057, 21942171]

約数ペア:

[(1, 21942171), (3, 7314057), (9, 2438019), (27, 812673), (79, 277749), (81, 270891), (127, 172773), (237, 92583), (243, 90297), (381, 57591), (711, 30861), (729, 30099), (1143, 19197), (2133, 10287), (2187, 10033), (3429, 6399)]