21763485

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1$

素因数の和:172

約数の個数: 80

約数和(自身を含む): 43124400

約数和(自身を除く): 21360915

約数列:

[1, 3, 5, 9, 15, 17, 27, 29, 45, 51, 81, 85, 87, 109, 135, 145, 153, 255, 261, 327, 405, 435, 459, 493, 545, 765, 783, 981, 1305, 1377, 1479, 1635, 1853, 2295, 2349, 2465, 2943, 3161, 3915, 4437, 4905, 5559, 6885, 7395, 8829, 9265, 9483, 11745, 13311, 14715, 15805, 16677, 22185, 27795, 28449, 39933, 44145, 47415, 50031, 53737, 66555, 83385, 85347, 142245, 150093, 161211, 199665, 250155, 256041, 268685, 426735, 483633, 750465, 806055, 1280205, 1450899, 2418165, 4352697, 7254495, 21763485]

約数ペア:

[(1, 21763485), (3, 7254495), (5, 4352697), (9, 2418165), (15, 1450899), (17, 1280205), (27, 806055), (29, 750465), (45, 483633), (51, 426735), (81, 268685), (85, 256041), (87, 250155), (109, 199665), (135, 161211), (145, 150093), (153, 142245), (255, 85347), (261, 83385), (327, 66555), (405, 53737), (435, 50031), (459, 47415), (493, 44145), (545, 39933), (765, 28449), (783, 27795), (981, 22185), (1305, 16677), (1377, 15805), (1479, 14715), (1635, 13311), (1853, 11745), (2295, 9483), (2349, 9265), (2465, 8829), (2943, 7395), (3161, 6885), (3915, 5559), (4437, 4905)]