20156815

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1783}}^1$

素因数の和:1831

約数の個数: 32

約数和(自身を含む): 30827520

約数和(自身を除く): 10670705

約数列:

[1, 5, 7, 17, 19, 35, 85, 95, 119, 133, 323, 595, 665, 1615, 1783, 2261, 8915, 11305, 12481, 30311, 33877, 62405, 151555, 169385, 212177, 237139, 575909, 1060885, 1185695, 2879545, 4031363, 20156815]

約数ペア:

[(1, 20156815), (5, 4031363), (7, 2879545), (17, 1185695), (19, 1060885), (35, 575909), (85, 237139), (95, 212177), (119, 169385), (133, 151555), (323, 62405), (595, 33877), (665, 30311), (1615, 12481), (1783, 11305), (2261, 8915)]