81307575

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{11657}}^1$

素因数の和:11704

約数の個数: 36

約数和(自身を含む): 150341568

約数和(自身を除く): 69033993

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 155, 225, 279, 465, 775, 1395, 2325, 6975, 11657, 34971, 58285, 104913, 174855, 291425, 361367, 524565, 874275, 1084101, 1806835, 2622825, 3252303, 5420505, 9034175, 16261515, 27102525, 81307575]

約数ペア:

[(1, 81307575), (3, 27102525), (5, 16261515), (9, 9034175), (15, 5420505), (25, 3252303), (31, 2622825), (45, 1806835), (75, 1084101), (93, 874275), (155, 524565), (225, 361367), (279, 291425), (465, 174855), (775, 104913), (1395, 58285), (2325, 34971), (6975, 11657)]