81549180

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{709}}^1$

素因数の和:801

約数の個数: 120

約数和(自身を含む): 259791840

約数和(自身を除く): 178242660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 71, 81, 90, 108, 135, 142, 162, 180, 213, 270, 284, 324, 355, 405, 426, 540, 639, 709, 710, 810, 852, 1065, 1278, 1418, 1420, 1620, 1917, 2127, 2130, 2556, 2836, 3195, 3545, 3834, 4254, 4260, 5751, 6381, 6390, 7090, 7668, 8508, 9585, 10635, 11502, 12762, 12780, 14180, 19143, 19170, 21270, 23004, 25524, 28755, 31905, 38286, 38340, 42540, 50339, 57429, 57510, 63810, 76572, 95715, 100678, 114858, 115020, 127620, 151017, 191430, 201356, 229716, 251695, 287145, 302034, 382860, 453051, 503390, 574290, 604068, 755085, 906102, 1006780, 1148580, 1359153, 1510170, 1812204, 2265255, 2718306, 3020340, 4077459, 4530510, 5436612, 6795765, 8154918, 9061020, 13591530, 16309836, 20387295, 27183060, 40774590, 81549180]

約数ペア:

[(1, 81549180), (2, 40774590), (3, 27183060), (4, 20387295), (5, 16309836), (6, 13591530), (9, 9061020), (10, 8154918), (12, 6795765), (15, 5436612), (18, 4530510), (20, 4077459), (27, 3020340), (30, 2718306), (36, 2265255), (45, 1812204), (54, 1510170), (60, 1359153), (71, 1148580), (81, 1006780), (90, 906102), (108, 755085), (135, 604068), (142, 574290), (162, 503390), (180, 453051), (213, 382860), (270, 302034), (284, 287145), (324, 251695), (355, 229716), (405, 201356), (426, 191430), (540, 151017), (639, 127620), (709, 115020), (710, 114858), (810, 100678), (852, 95715), (1065, 76572), (1278, 63810), (1418, 57510), (1420, 57429), (1620, 50339), (1917, 42540), (2127, 38340), (2130, 38286), (2556, 31905), (2836, 28755), (3195, 25524), (3545, 23004), (3834, 21270), (4254, 19170), (4260, 19143), (5751, 14180), (6381, 12780), (6390, 12762), (7090, 11502), (7668, 10635), (8508, 9585)]