81705789

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 134784000

約数和(自身を除く): 53078211

約数列:

[1, 3, 9, 11, 29, 33, 87, 99, 149, 191, 261, 319, 447, 573, 957, 1341, 1639, 1719, 2101, 2871, 4321, 4917, 5539, 6303, 12963, 14751, 16617, 18909, 28459, 38889, 47531, 49851, 60929, 85377, 142593, 182787, 256131, 313049, 427779, 548361, 825311, 939147, 2475933, 2817441, 7427799, 9078421, 27235263, 81705789]

約数ペア:

[(1, 81705789), (3, 27235263), (9, 9078421), (11, 7427799), (29, 2817441), (33, 2475933), (87, 939147), (99, 825311), (149, 548361), (191, 427779), (261, 313049), (319, 256131), (447, 182787), (573, 142593), (957, 85377), (1341, 60929), (1639, 49851), (1719, 47531), (2101, 38889), (2871, 28459), (4321, 18909), (4917, 16617), (5539, 14751), (6303, 12963)]