20644785

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65539}}^1$

素因数の和:65557

約数の個数: 24

約数和(自身を含む): 40896960

約数和(自身を除く): 20252175

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65539, 196617, 327695, 458773, 589851, 983085, 1376319, 2293865, 2949255, 4128957, 6881595, 20644785]

約数ペア:

[(1, 20644785), (3, 6881595), (5, 4128957), (7, 2949255), (9, 2293865), (15, 1376319), (21, 983085), (35, 589851), (45, 458773), (63, 327695), (105, 196617), (315, 65539)]