21938607

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8737}}^1$

素因数の和:8780

約数の個数: 20

約数和(自身を含む): 33833536

約数和(自身を除く): 11894929

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8737, 26211, 78633, 235899, 270847, 707697, 812541, 2437623, 7312869, 21938607]

約数ペア:

[(1, 21938607), (3, 7312869), (9, 2437623), (27, 812541), (31, 707697), (81, 270847), (93, 235899), (279, 78633), (837, 26211), (2511, 8737)]