208021415

素因数分解:

$5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{5209}}^1$

素因数の和:5391

約数の個数: 24

約数和(自身を含む): 292218480

約数和(自身を除く): 84197065

約数列:

[1, 5, 7, 35, 49, 163, 245, 815, 1141, 5209, 5705, 7987, 26045, 36463, 39935, 182315, 255241, 849067, 1276205, 4245335, 5943469, 29717345, 41604283, 208021415]

約数ペア:

[(1, 208021415), (5, 41604283), (7, 29717345), (35, 5943469), (49, 4245335), (163, 1276205), (245, 849067), (815, 255241), (1141, 182315), (5209, 39935), (5705, 36463), (7987, 26045)]