81505089

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 134991360

約数和(自身を除く): 53486271

約数列:

[1, 3, 9, 17, 27, 41, 51, 61, 71, 123, 153, 183, 213, 369, 459, 549, 639, 697, 1037, 1107, 1207, 1647, 1917, 2091, 2501, 2911, 3111, 3621, 4331, 6273, 7503, 8733, 9333, 10863, 12993, 18819, 22509, 26199, 27999, 32589, 38979, 42517, 49487, 67527, 73627, 78597, 116937, 127551, 148461, 177571, 220881, 382653, 445383, 532713, 662643, 1147959, 1336149, 1598139, 1987929, 3018707, 4794417, 9056121, 27168363, 81505089]

約数ペア:

[(1, 81505089), (3, 27168363), (9, 9056121), (17, 4794417), (27, 3018707), (41, 1987929), (51, 1598139), (61, 1336149), (71, 1147959), (123, 662643), (153, 532713), (183, 445383), (213, 382653), (369, 220881), (459, 177571), (549, 148461), (639, 127551), (697, 116937), (1037, 78597), (1107, 73627), (1207, 67527), (1647, 49487), (1917, 42517), (2091, 38979), (2501, 32589), (2911, 27999), (3111, 26199), (3621, 22509), (4331, 18819), (6273, 12993), (7503, 10863), (8733, 9333)]