7990900

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{1949}}^1$

素因数の和:2004

約数の個数: 36

約数和(自身を含む): 17772300

約数和(自身を除く): 9781400

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 1949, 2050, 3898, 4100, 7796, 9745, 19490, 38980, 48725, 79909, 97450, 159818, 194900, 319636, 399545, 799090, 1598180, 1997725, 3995450, 7990900]

約数ペア:

[(1, 7990900), (2, 3995450), (4, 1997725), (5, 1598180), (10, 799090), (20, 399545), (25, 319636), (41, 194900), (50, 159818), (82, 97450), (100, 79909), (164, 48725), (205, 38980), (410, 19490), (820, 9745), (1025, 7796), (1949, 4100), (2050, 3898)]