81534420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41179}}^1$

素因数の和:41205

約数の個数: 72

約数和(自身を含む): 269811360

約数和(自身を除く): 188276940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 41179, 82358, 123537, 164716, 205895, 247074, 370611, 411790, 452969, 494148, 617685, 741222, 823580, 905938, 1235370, 1358907, 1482444, 1811876, 1853055, 2264845, 2470740, 2717814, 3706110, 4076721, 4529690, 5435628, 6794535, 7412220, 8153442, 9059380, 13589070, 16306884, 20383605, 27178140, 40767210, 81534420]

約数ペア:

[(1, 81534420), (2, 40767210), (3, 27178140), (4, 20383605), (5, 16306884), (6, 13589070), (9, 9059380), (10, 8153442), (11, 7412220), (12, 6794535), (15, 5435628), (18, 4529690), (20, 4076721), (22, 3706110), (30, 2717814), (33, 2470740), (36, 2264845), (44, 1853055), (45, 1811876), (55, 1482444), (60, 1358907), (66, 1235370), (90, 905938), (99, 823580), (110, 741222), (132, 617685), (165, 494148), (180, 452969), (198, 411790), (220, 370611), (330, 247074), (396, 205895), (495, 164716), (660, 123537), (990, 82358), (1980, 41179)]