20864774

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{78439}}^1$

素因数の和:78467

約数の個数: 16

約数和(自身を含む): 37651200

約数和(自身を除く): 16786426

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 78439, 156878, 549073, 1098146, 1490341, 2980682, 10432387, 20864774]

約数ペア:

[(1, 20864774), (2, 10432387), (7, 2980682), (14, 1490341), (19, 1098146), (38, 549073), (133, 156878), (266, 78439)]