20001002

素因数分解:

$2^1\times 7^1\times {\mathrm{1117}}^1\times {\mathrm{1279}}^1$

素因数の和:2405

約数の個数: 16

約数和(自身を含む): 34344960

約数和(自身を除く): 14343958

約数列:

[1, 2, 7, 14, 1117, 1279, 2234, 2558, 7819, 8953, 15638, 17906, 1428643, 2857286, 10000501, 20001002]

約数ペア:

[(1, 20001002), (2, 10000501), (7, 2857286), (14, 1428643), (1117, 17906), (1279, 15638), (2234, 8953), (2558, 7819)]