20978678

素因数分解:

$2^1\times 7^1\times {\mathrm{929}}^1\times {\mathrm{1613}}^1$

素因数の和:2551

約数の個数: 16

約数和(自身を含む): 36024480

約数和(自身を除く): 15045802

約数列:

[1, 2, 7, 14, 929, 1613, 1858, 3226, 6503, 11291, 13006, 22582, 1498477, 2996954, 10489339, 20978678]

約数ペア:

[(1, 20978678), (2, 10489339), (7, 2996954), (14, 1498477), (929, 22582), (1613, 13006), (1858, 11291), (3226, 6503)]