81531441

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{569}}^1$

素因数の和:671

約数の個数: 40

約数和(自身を含む): 128284200

約数和(自身を除く): 46752759

約数列:

[1, 3, 9, 27, 29, 61, 81, 87, 183, 261, 549, 569, 783, 1647, 1707, 1769, 2349, 4941, 5121, 5307, 15363, 15921, 16501, 34709, 46089, 47763, 49503, 104127, 143289, 148509, 312381, 445527, 937143, 1006561, 1336581, 2811429, 3019683, 9059049, 27177147, 81531441]

約数ペア:

[(1, 81531441), (3, 27177147), (9, 9059049), (27, 3019683), (29, 2811429), (61, 1336581), (81, 1006561), (87, 937143), (183, 445527), (261, 312381), (549, 148509), (569, 143289), (783, 104127), (1647, 49503), (1707, 47763), (1769, 46089), (2349, 34709), (4941, 16501), (5121, 15921), (5307, 15363)]