209408975

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{25933}}^1$

素因数の和:25979

約数の個数: 24

約数和(自身を含む): 289423440

約数和(自身を除く): 80014465

約数列:

[1, 5, 17, 19, 25, 85, 95, 323, 425, 475, 1615, 8075, 25933, 129665, 440861, 492727, 648325, 2204305, 2463635, 8376359, 11021525, 12318175, 41881795, 209408975]

約数ペア:

[(1, 209408975), (5, 41881795), (17, 12318175), (19, 11021525), (25, 8376359), (85, 2463635), (95, 2204305), (323, 648325), (425, 492727), (475, 440861), (1615, 129665), (8075, 25933)]