21189120

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:146

約数の個数: 160

約数和(自身を含む): 70709760

約数和(自身を除く): 49520640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 89, 93, 96, 120, 124, 128, 155, 160, 178, 186, 192, 240, 248, 256, 267, 310, 320, 356, 372, 384, 445, 465, 480, 496, 512, 534, 620, 640, 712, 744, 768, 890, 930, 960, 992, 1068, 1240, 1280, 1335, 1424, 1488, 1536, 1780, 1860, 1920, 1984, 2136, 2480, 2560, 2670, 2759, 2848, 2976, 3560, 3720, 3840, 3968, 4272, 4960, 5340, 5518, 5696, 5952, 7120, 7440, 7680, 7936, 8277, 8544, 9920, 10680, 11036, 11392, 11904, 13795, 14240, 14880, 15872, 16554, 17088, 19840, 21360, 22072, 22784, 23808, 27590, 28480, 29760, 33108, 34176, 39680, 41385, 42720, 44144, 45568, 47616, 55180, 56960, 59520, 66216, 68352, 79360, 82770, 85440, 88288, 110360, 113920, 119040, 132432, 136704, 165540, 170880, 176576, 220720, 227840, 238080, 264864, 331080, 341760, 353152, 441440, 529728, 662160, 683520, 706304, 882880, 1059456, 1324320, 1412608, 1765760, 2118912, 2648640, 3531520, 4237824, 5297280, 7063040, 10594560, 21189120]

約数ペア:

[(1, 21189120), (2, 10594560), (3, 7063040), (4, 5297280), (5, 4237824), (6, 3531520), (8, 2648640), (10, 2118912), (12, 1765760), (15, 1412608), (16, 1324320), (20, 1059456), (24, 882880), (30, 706304), (31, 683520), (32, 662160), (40, 529728), (48, 441440), (60, 353152), (62, 341760), (64, 331080), (80, 264864), (89, 238080), (93, 227840), (96, 220720), (120, 176576), (124, 170880), (128, 165540), (155, 136704), (160, 132432), (178, 119040), (186, 113920), (192, 110360), (240, 88288), (248, 85440), (256, 82770), (267, 79360), (310, 68352), (320, 66216), (356, 59520), (372, 56960), (384, 55180), (445, 47616), (465, 45568), (480, 44144), (496, 42720), (512, 41385), (534, 39680), (620, 34176), (640, 33108), (712, 29760), (744, 28480), (768, 27590), (890, 23808), (930, 22784), (960, 22072), (992, 21360), (1068, 19840), (1240, 17088), (1280, 16554), (1335, 15872), (1424, 14880), (1488, 14240), (1536, 13795), (1780, 11904), (1860, 11392), (1920, 11036), (1984, 10680), (2136, 9920), (2480, 8544), (2560, 8277), (2670, 7936), (2759, 7680), (2848, 7440), (2976, 7120), (3560, 5952), (3720, 5696), (3840, 5518), (3968, 5340), (4272, 4960)]