81281475

素因数分解:

$3^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:163

約数の個数: 120

約数和(自身を含む): 170145360

約数和(自身を除く): 88863885

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 41, 45, 55, 75, 81, 89, 99, 123, 135, 165, 205, 225, 267, 275, 297, 369, 405, 445, 451, 495, 615, 675, 801, 825, 891, 979, 1025, 1107, 1335, 1353, 1485, 1845, 2025, 2225, 2255, 2403, 2475, 2937, 3075, 3321, 3649, 4005, 4059, 4455, 4895, 5535, 6675, 6765, 7209, 7425, 8811, 9225, 10947, 11275, 12015, 12177, 14685, 16605, 18245, 20025, 20295, 22275, 24475, 26433, 27675, 32841, 33825, 36045, 36531, 40139, 44055, 54735, 60075, 60885, 73425, 79299, 83025, 91225, 98523, 101475, 120417, 132165, 164205, 180225, 182655, 200695, 220275, 273675, 295569, 304425, 361251, 396495, 492615, 602085, 660825, 821025, 913275, 1003475, 1083753, 1477845, 1806255, 1982475, 2463075, 3010425, 3251259, 5418765, 7389225, 9031275, 16256295, 27093825, 81281475]

約数ペア:

[(1, 81281475), (3, 27093825), (5, 16256295), (9, 9031275), (11, 7389225), (15, 5418765), (25, 3251259), (27, 3010425), (33, 2463075), (41, 1982475), (45, 1806255), (55, 1477845), (75, 1083753), (81, 1003475), (89, 913275), (99, 821025), (123, 660825), (135, 602085), (165, 492615), (205, 396495), (225, 361251), (267, 304425), (275, 295569), (297, 273675), (369, 220275), (405, 200695), (445, 182655), (451, 180225), (495, 164205), (615, 132165), (675, 120417), (801, 101475), (825, 98523), (891, 91225), (979, 83025), (1025, 79299), (1107, 73425), (1335, 60885), (1353, 60075), (1485, 54735), (1845, 44055), (2025, 40139), (2225, 36531), (2255, 36045), (2403, 33825), (2475, 32841), (2937, 27675), (3075, 26433), (3321, 24475), (3649, 22275), (4005, 20295), (4059, 20025), (4455, 18245), (4895, 16605), (5535, 14685), (6675, 12177), (6765, 12015), (7209, 11275), (7425, 10947), (8811, 9225)]