20565495

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1$

素因数の和:166

約数の個数: 80

約数和(自身を含む): 40772160

約数和(自身を除く): 20206665

約数列:

[1, 3, 5, 9, 15, 17, 27, 29, 45, 51, 81, 85, 87, 103, 135, 145, 153, 255, 261, 309, 405, 435, 459, 493, 515, 765, 783, 927, 1305, 1377, 1479, 1545, 1751, 2295, 2349, 2465, 2781, 2987, 3915, 4437, 4635, 5253, 6885, 7395, 8343, 8755, 8961, 11745, 13311, 13905, 14935, 15759, 22185, 26265, 26883, 39933, 41715, 44805, 47277, 50779, 66555, 78795, 80649, 134415, 141831, 152337, 199665, 236385, 241947, 253895, 403245, 457011, 709155, 761685, 1209735, 1371033, 2285055, 4113099, 6855165, 20565495]

約数ペア:

[(1, 20565495), (3, 6855165), (5, 4113099), (9, 2285055), (15, 1371033), (17, 1209735), (27, 761685), (29, 709155), (45, 457011), (51, 403245), (81, 253895), (85, 241947), (87, 236385), (103, 199665), (135, 152337), (145, 141831), (153, 134415), (255, 80649), (261, 78795), (309, 66555), (405, 50779), (435, 47277), (459, 44805), (493, 41715), (515, 39933), (765, 26883), (783, 26265), (927, 22185), (1305, 15759), (1377, 14935), (1479, 13905), (1545, 13311), (1751, 11745), (2295, 8961), (2349, 8755), (2465, 8343), (2781, 7395), (2987, 6885), (3915, 5253), (4437, 4635)]