20729520

素因数分解:

$2^4\times 3^4\times 5^1\times 7^1\times {\mathrm{457}}^1$

素因数の和:489

約数の個数: 200

約数和(自身を含む): 82461984

約数和(自身を除く): 61732464

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 81, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 162, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 324, 336, 360, 378, 405, 420, 432, 457, 504, 540, 560, 567, 630, 648, 720, 756, 810, 840, 914, 945, 1008, 1080, 1134, 1260, 1296, 1371, 1512, 1620, 1680, 1828, 1890, 2160, 2268, 2285, 2520, 2742, 2835, 3024, 3199, 3240, 3656, 3780, 4113, 4536, 4570, 5040, 5484, 5670, 6398, 6480, 6855, 7312, 7560, 8226, 9072, 9140, 9597, 10968, 11340, 12339, 12796, 13710, 15120, 15995, 16452, 18280, 19194, 20565, 21936, 22680, 24678, 25592, 27420, 28791, 31990, 32904, 36560, 37017, 38388, 41130, 45360, 47985, 49356, 51184, 54840, 57582, 61695, 63980, 65808, 74034, 76776, 82260, 86373, 95970, 98712, 109680, 115164, 123390, 127960, 143955, 148068, 153552, 164520, 172746, 185085, 191940, 197424, 230328, 246780, 255920, 259119, 287910, 296136, 329040, 345492, 370170, 383880, 431865, 460656, 493560, 518238, 575820, 592272, 690984, 740340, 767760, 863730, 987120, 1036476, 1151640, 1295595, 1381968, 1480680, 1727460, 2072952, 2303280, 2591190, 2961360, 3454920, 4145904, 5182380, 6909840, 10364760, 20729520]

約数ペア:

[(1, 20729520), (2, 10364760), (3, 6909840), (4, 5182380), (5, 4145904), (6, 3454920), (7, 2961360), (8, 2591190), (9, 2303280), (10, 2072952), (12, 1727460), (14, 1480680), (15, 1381968), (16, 1295595), (18, 1151640), (20, 1036476), (21, 987120), (24, 863730), (27, 767760), (28, 740340), (30, 690984), (35, 592272), (36, 575820), (40, 518238), (42, 493560), (45, 460656), (48, 431865), (54, 383880), (56, 370170), (60, 345492), (63, 329040), (70, 296136), (72, 287910), (80, 259119), (81, 255920), (84, 246780), (90, 230328), (105, 197424), (108, 191940), (112, 185085), (120, 172746), (126, 164520), (135, 153552), (140, 148068), (144, 143955), (162, 127960), (168, 123390), (180, 115164), (189, 109680), (210, 98712), (216, 95970), (240, 86373), (252, 82260), (270, 76776), (280, 74034), (315, 65808), (324, 63980), (336, 61695), (360, 57582), (378, 54840), (405, 51184), (420, 49356), (432, 47985), (457, 45360), (504, 41130), (540, 38388), (560, 37017), (567, 36560), (630, 32904), (648, 31990), (720, 28791), (756, 27420), (810, 25592), (840, 24678), (914, 22680), (945, 21936), (1008, 20565), (1080, 19194), (1134, 18280), (1260, 16452), (1296, 15995), (1371, 15120), (1512, 13710), (1620, 12796), (1680, 12339), (1828, 11340), (1890, 10968), (2160, 9597), (2268, 9140), (2285, 9072), (2520, 8226), (2742, 7560), (2835, 7312), (3024, 6855), (3199, 6480), (3240, 6398), (3656, 5670), (3780, 5484), (4113, 5040), (4536, 4570)]