21895920

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:165

約数の個数: 200

約数和(自身を含む): 79221120

約数和(自身を除く): 57325200

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 36, 40, 45, 48, 54, 60, 62, 72, 80, 81, 90, 93, 108, 109, 120, 124, 135, 144, 155, 162, 180, 186, 216, 218, 240, 248, 270, 279, 310, 324, 327, 360, 372, 405, 432, 436, 465, 496, 540, 545, 558, 620, 648, 654, 720, 744, 810, 837, 872, 930, 981, 1080, 1090, 1116, 1240, 1296, 1308, 1395, 1488, 1620, 1635, 1674, 1744, 1860, 1962, 2160, 2180, 2232, 2480, 2511, 2616, 2790, 2943, 3240, 3270, 3348, 3379, 3720, 3924, 4185, 4360, 4464, 4905, 5022, 5232, 5580, 5886, 6480, 6540, 6696, 6758, 7440, 7848, 8370, 8720, 8829, 9810, 10044, 10137, 11160, 11772, 12555, 13080, 13392, 13516, 14715, 15696, 16740, 16895, 17658, 19620, 20088, 20274, 22320, 23544, 25110, 26160, 27032, 29430, 30411, 33480, 33790, 35316, 39240, 40176, 40548, 44145, 47088, 50220, 50685, 54064, 58860, 60822, 66960, 67580, 70632, 78480, 81096, 88290, 91233, 100440, 101370, 117720, 121644, 135160, 141264, 152055, 162192, 176580, 182466, 200880, 202740, 235440, 243288, 270320, 273699, 304110, 353160, 364932, 405480, 456165, 486576, 547398, 608220, 706320, 729864, 810960, 912330, 1094796, 1216440, 1368495, 1459728, 1824660, 2189592, 2432880, 2736990, 3649320, 4379184, 5473980, 7298640, 10947960, 21895920]

約数ペア:

[(1, 21895920), (2, 10947960), (3, 7298640), (4, 5473980), (5, 4379184), (6, 3649320), (8, 2736990), (9, 2432880), (10, 2189592), (12, 1824660), (15, 1459728), (16, 1368495), (18, 1216440), (20, 1094796), (24, 912330), (27, 810960), (30, 729864), (31, 706320), (36, 608220), (40, 547398), (45, 486576), (48, 456165), (54, 405480), (60, 364932), (62, 353160), (72, 304110), (80, 273699), (81, 270320), (90, 243288), (93, 235440), (108, 202740), (109, 200880), (120, 182466), (124, 176580), (135, 162192), (144, 152055), (155, 141264), (162, 135160), (180, 121644), (186, 117720), (216, 101370), (218, 100440), (240, 91233), (248, 88290), (270, 81096), (279, 78480), (310, 70632), (324, 67580), (327, 66960), (360, 60822), (372, 58860), (405, 54064), (432, 50685), (436, 50220), (465, 47088), (496, 44145), (540, 40548), (545, 40176), (558, 39240), (620, 35316), (648, 33790), (654, 33480), (720, 30411), (744, 29430), (810, 27032), (837, 26160), (872, 25110), (930, 23544), (981, 22320), (1080, 20274), (1090, 20088), (1116, 19620), (1240, 17658), (1296, 16895), (1308, 16740), (1395, 15696), (1488, 14715), (1620, 13516), (1635, 13392), (1674, 13080), (1744, 12555), (1860, 11772), (1962, 11160), (2160, 10137), (2180, 10044), (2232, 9810), (2480, 8829), (2511, 8720), (2616, 8370), (2790, 7848), (2943, 7440), (3240, 6758), (3270, 6696), (3348, 6540), (3379, 6480), (3720, 5886), (3924, 5580), (4185, 5232), (4360, 5022), (4464, 4905)]