20872012

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{10499}}^1$

素因数の和:10581

約数の個数: 24

約数和(自身を含む): 42336000

約数和(自身を除く): 21463988

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 10499, 20998, 41996, 73493, 146986, 293972, 745429, 1490858, 2981716, 5218003, 10436006, 20872012]

約数ペア:

[(1, 20872012), (2, 10436006), (4, 5218003), (7, 2981716), (14, 1490858), (28, 745429), (71, 293972), (142, 146986), (284, 73493), (497, 41996), (994, 20998), (1988, 10499)]