20671728

素因数分解:

$2^4\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1$

素因数の和:100

約数の個数: 240

約数和(自身を含む): 73281024

約数和(自身を除く): 52609296

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 16, 17, 21, 22, 24, 28, 33, 34, 42, 44, 47, 48, 49, 51, 56, 66, 68, 77, 84, 88, 94, 98, 102, 112, 119, 132, 136, 141, 147, 154, 168, 176, 187, 188, 196, 204, 231, 238, 264, 272, 282, 294, 308, 329, 336, 357, 374, 376, 392, 408, 462, 476, 517, 528, 539, 561, 564, 588, 616, 658, 714, 748, 752, 784, 799, 816, 833, 924, 952, 987, 1034, 1078, 1122, 1128, 1176, 1232, 1309, 1316, 1428, 1496, 1551, 1598, 1617, 1666, 1848, 1904, 1974, 2068, 2156, 2244, 2256, 2303, 2352, 2397, 2499, 2618, 2632, 2856, 2992, 3102, 3196, 3234, 3332, 3619, 3696, 3927, 3948, 4136, 4312, 4488, 4606, 4794, 4998, 5236, 5264, 5593, 5712, 6204, 6392, 6468, 6664, 6909, 7238, 7854, 7896, 8272, 8624, 8789, 8976, 9163, 9212, 9588, 9996, 10472, 10857, 11186, 12408, 12784, 12936, 13328, 13818, 14476, 15708, 15792, 16779, 17578, 18326, 18424, 19176, 19992, 20944, 21714, 22372, 24816, 25333, 25872, 26367, 27489, 27636, 28952, 31416, 33558, 35156, 36652, 36848, 38352, 39151, 39984, 43428, 44744, 50666, 52734, 54978, 55272, 57904, 61523, 62832, 67116, 70312, 73304, 75999, 78302, 86856, 89488, 101332, 105468, 109956, 110544, 117453, 123046, 134232, 140624, 146608, 151998, 156604, 173712, 184569, 202664, 210936, 219912, 234906, 246092, 268464, 303996, 313208, 369138, 405328, 421872, 430661, 439824, 469812, 492184, 607992, 626416, 738276, 861322, 939624, 984368, 1215984, 1291983, 1476552, 1722644, 1879248, 2583966, 2953104, 3445288, 5167932, 6890576, 10335864, 20671728]

約数ペア:

[(1, 20671728), (2, 10335864), (3, 6890576), (4, 5167932), (6, 3445288), (7, 2953104), (8, 2583966), (11, 1879248), (12, 1722644), (14, 1476552), (16, 1291983), (17, 1215984), (21, 984368), (22, 939624), (24, 861322), (28, 738276), (33, 626416), (34, 607992), (42, 492184), (44, 469812), (47, 439824), (48, 430661), (49, 421872), (51, 405328), (56, 369138), (66, 313208), (68, 303996), (77, 268464), (84, 246092), (88, 234906), (94, 219912), (98, 210936), (102, 202664), (112, 184569), (119, 173712), (132, 156604), (136, 151998), (141, 146608), (147, 140624), (154, 134232), (168, 123046), (176, 117453), (187, 110544), (188, 109956), (196, 105468), (204, 101332), (231, 89488), (238, 86856), (264, 78302), (272, 75999), (282, 73304), (294, 70312), (308, 67116), (329, 62832), (336, 61523), (357, 57904), (374, 55272), (376, 54978), (392, 52734), (408, 50666), (462, 44744), (476, 43428), (517, 39984), (528, 39151), (539, 38352), (561, 36848), (564, 36652), (588, 35156), (616, 33558), (658, 31416), (714, 28952), (748, 27636), (752, 27489), (784, 26367), (799, 25872), (816, 25333), (833, 24816), (924, 22372), (952, 21714), (987, 20944), (1034, 19992), (1078, 19176), (1122, 18424), (1128, 18326), (1176, 17578), (1232, 16779), (1309, 15792), (1316, 15708), (1428, 14476), (1496, 13818), (1551, 13328), (1598, 12936), (1617, 12784), (1666, 12408), (1848, 11186), (1904, 10857), (1974, 10472), (2068, 9996), (2156, 9588), (2244, 9212), (2256, 9163), (2303, 8976), (2352, 8789), (2397, 8624), (2499, 8272), (2618, 7896), (2632, 7854), (2856, 7238), (2992, 6909), (3102, 6664), (3196, 6468), (3234, 6392), (3332, 6204), (3619, 5712), (3696, 5593), (3927, 5264), (3948, 5236), (4136, 4998), (4312, 4794), (4488, 4606)]