81398975

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{27361}}^1$

素因数の和:27395

約数の個数: 24

約数和(自身を含む): 122143968

約数和(自身を除く): 40744993

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 425, 595, 2975, 27361, 136805, 191527, 465137, 684025, 957635, 2325685, 3255959, 4788175, 11628425, 16279795, 81398975]

約数ペア:

[(1, 81398975), (5, 16279795), (7, 11628425), (17, 4788175), (25, 3255959), (35, 2325685), (85, 957635), (119, 684025), (175, 465137), (425, 191527), (595, 136805), (2975, 27361)]