81185013

素因数分解:

$3^2\times 7^4\times {\mathrm{13}}^1\times {\mathrm{17}}^2$

素因数の和:81

約数の個数: 90

約数和(自身を含む): 156503074

約数和(自身を除く): 75318061

約数列:

[1, 3, 7, 9, 13, 17, 21, 39, 49, 51, 63, 91, 117, 119, 147, 153, 221, 273, 289, 343, 357, 441, 637, 663, 819, 833, 867, 1029, 1071, 1547, 1911, 1989, 2023, 2401, 2499, 2601, 3087, 3757, 4459, 4641, 5733, 5831, 6069, 7203, 7497, 10829, 11271, 13377, 13923, 14161, 17493, 18207, 21609, 26299, 31213, 32487, 33813, 40131, 40817, 42483, 52479, 75803, 78897, 93639, 97461, 99127, 122451, 127449, 184093, 227409, 236691, 280917, 297381, 367353, 530621, 552279, 682227, 693889, 892143, 1288651, 1591863, 1656837, 2081667, 3865953, 4775589, 6245001, 9020557, 11597859, 27061671, 81185013]

約数ペア:

[(1, 81185013), (3, 27061671), (7, 11597859), (9, 9020557), (13, 6245001), (17, 4775589), (21, 3865953), (39, 2081667), (49, 1656837), (51, 1591863), (63, 1288651), (91, 892143), (117, 693889), (119, 682227), (147, 552279), (153, 530621), (221, 367353), (273, 297381), (289, 280917), (343, 236691), (357, 227409), (441, 184093), (637, 127449), (663, 122451), (819, 99127), (833, 97461), (867, 93639), (1029, 78897), (1071, 75803), (1547, 52479), (1911, 42483), (1989, 40817), (2023, 40131), (2401, 33813), (2499, 32487), (2601, 31213), (3087, 26299), (3757, 21609), (4459, 18207), (4641, 17493), (5733, 14161), (5831, 13923), (6069, 13377), (7203, 11271), (7497, 10829)]