21530880

素因数分解:

$2^8\times 3^3\times 5^1\times 7^1\times {\mathrm{89}}^1$

素因数の和:126

約数の個数: 288

約数和(自身を含む): 88300800

約数和(自身を除く): 66769920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 64, 70, 72, 80, 84, 89, 90, 96, 105, 108, 112, 120, 126, 128, 135, 140, 144, 160, 168, 178, 180, 189, 192, 210, 216, 224, 240, 252, 256, 267, 270, 280, 288, 315, 320, 336, 356, 360, 378, 384, 420, 432, 445, 448, 480, 504, 534, 540, 560, 576, 623, 630, 640, 672, 712, 720, 756, 768, 801, 840, 864, 890, 896, 945, 960, 1008, 1068, 1080, 1120, 1152, 1246, 1260, 1280, 1335, 1344, 1424, 1440, 1512, 1602, 1680, 1728, 1780, 1792, 1869, 1890, 1920, 2016, 2136, 2160, 2240, 2304, 2403, 2492, 2520, 2670, 2688, 2848, 2880, 3024, 3115, 3204, 3360, 3456, 3560, 3738, 3780, 3840, 4005, 4032, 4272, 4320, 4480, 4806, 4984, 5040, 5340, 5376, 5607, 5696, 5760, 6048, 6230, 6408, 6720, 6912, 7120, 7476, 7560, 8010, 8064, 8544, 8640, 8960, 9345, 9612, 9968, 10080, 10680, 11214, 11392, 11520, 12015, 12096, 12460, 12816, 13440, 14240, 14952, 15120, 16020, 16128, 16821, 17088, 17280, 18690, 19224, 19936, 20160, 21360, 22428, 22784, 24030, 24192, 24920, 25632, 26880, 28035, 28480, 29904, 30240, 32040, 33642, 34176, 34560, 37380, 38448, 39872, 40320, 42720, 44856, 48060, 48384, 49840, 51264, 56070, 56960, 59808, 60480, 64080, 67284, 68352, 74760, 76896, 79744, 80640, 84105, 85440, 89712, 96120, 99680, 102528, 112140, 113920, 119616, 120960, 128160, 134568, 149520, 153792, 159488, 168210, 170880, 179424, 192240, 199360, 205056, 224280, 239232, 241920, 256320, 269136, 299040, 307584, 336420, 341760, 358848, 384480, 398720, 448560, 478464, 512640, 538272, 598080, 615168, 672840, 717696, 768960, 797440, 897120, 1025280, 1076544, 1196160, 1345680, 1435392, 1537920, 1794240, 2153088, 2392320, 2691360, 3075840, 3588480, 4306176, 5382720, 7176960, 10765440, 21530880]

約数ペア:

[(1, 21530880), (2, 10765440), (3, 7176960), (4, 5382720), (5, 4306176), (6, 3588480), (7, 3075840), (8, 2691360), (9, 2392320), (10, 2153088), (12, 1794240), (14, 1537920), (15, 1435392), (16, 1345680), (18, 1196160), (20, 1076544), (21, 1025280), (24, 897120), (27, 797440), (28, 768960), (30, 717696), (32, 672840), (35, 615168), (36, 598080), (40, 538272), (42, 512640), (45, 478464), (48, 448560), (54, 398720), (56, 384480), (60, 358848), (63, 341760), (64, 336420), (70, 307584), (72, 299040), (80, 269136), (84, 256320), (89, 241920), (90, 239232), (96, 224280), (105, 205056), (108, 199360), (112, 192240), (120, 179424), (126, 170880), (128, 168210), (135, 159488), (140, 153792), (144, 149520), (160, 134568), (168, 128160), (178, 120960), (180, 119616), (189, 113920), (192, 112140), (210, 102528), (216, 99680), (224, 96120), (240, 89712), (252, 85440), (256, 84105), (267, 80640), (270, 79744), (280, 76896), (288, 74760), (315, 68352), (320, 67284), (336, 64080), (356, 60480), (360, 59808), (378, 56960), (384, 56070), (420, 51264), (432, 49840), (445, 48384), (448, 48060), (480, 44856), (504, 42720), (534, 40320), (540, 39872), (560, 38448), (576, 37380), (623, 34560), (630, 34176), (640, 33642), (672, 32040), (712, 30240), (720, 29904), (756, 28480), (768, 28035), (801, 26880), (840, 25632), (864, 24920), (890, 24192), (896, 24030), (945, 22784), (960, 22428), (1008, 21360), (1068, 20160), (1080, 19936), (1120, 19224), (1152, 18690), (1246, 17280), (1260, 17088), (1280, 16821), (1335, 16128), (1344, 16020), (1424, 15120), (1440, 14952), (1512, 14240), (1602, 13440), (1680, 12816), (1728, 12460), (1780, 12096), (1792, 12015), (1869, 11520), (1890, 11392), (1920, 11214), (2016, 10680), (2136, 10080), (2160, 9968), (2240, 9612), (2304, 9345), (2403, 8960), (2492, 8640), (2520, 8544), (2670, 8064), (2688, 8010), (2848, 7560), (2880, 7476), (3024, 7120), (3115, 6912), (3204, 6720), (3360, 6408), (3456, 6230), (3560, 6048), (3738, 5760), (3780, 5696), (3840, 5607), (4005, 5376), (4032, 5340), (4272, 5040), (4320, 4984), (4480, 4806)]