7989025

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:190

約数の個数: 36

約数和(自身を含む): 11544400

約数和(自身を除く): 3555375

約数列:

[1, 5, 11, 19, 25, 55, 95, 121, 139, 209, 275, 475, 605, 695, 1045, 1529, 2299, 2641, 3025, 3475, 5225, 7645, 11495, 13205, 16819, 29051, 38225, 57475, 66025, 84095, 145255, 319561, 420475, 726275, 1597805, 7989025]

約数ペア:

[(1, 7989025), (5, 1597805), (11, 726275), (19, 420475), (25, 319561), (55, 145255), (95, 84095), (121, 66025), (139, 57475), (209, 38225), (275, 29051), (475, 16819), (605, 13205), (695, 11495), (1045, 7645), (1529, 5225), (2299, 3475), (2641, 3025)]