81978825

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{57529}}^1$

素因数の和:57561

約数の個数: 24

約数和(自身を含む): 142674400

約数和(自身を除く): 60695575

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 57529, 172587, 287645, 862935, 1093051, 1438225, 3279153, 4314675, 5465255, 16395765, 27326275, 81978825]

約数ペア:

[(1, 81978825), (3, 27326275), (5, 16395765), (15, 5465255), (19, 4314675), (25, 3279153), (57, 1438225), (75, 1093051), (95, 862935), (285, 287645), (475, 172587), (1425, 57529)]