21196809

素因数分解:

$3^4\times {\mathrm{167}}^1\times {\mathrm{1567}}^1$

素因数の和:1746

約数の個数: 20

約数和(自身を含む): 31874304

約数和(自身を除く): 10677495

約数列:

[1, 3, 9, 27, 81, 167, 501, 1503, 1567, 4509, 4701, 13527, 14103, 42309, 126927, 261689, 785067, 2355201, 7065603, 21196809]

約数ペア:

[(1, 21196809), (3, 7065603), (9, 2355201), (27, 785067), (81, 261689), (167, 126927), (501, 42309), (1503, 14103), (1567, 13527), (4509, 4701)]