21017304

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1$

素因数の和:270

約数の個数: 192

約数和(自身を含む): 75479040

約数和(自身を除く): 54461736

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 14, 17, 18, 21, 22, 24, 28, 33, 34, 36, 42, 44, 51, 56, 63, 66, 68, 72, 77, 84, 88, 99, 102, 119, 126, 132, 136, 153, 154, 168, 187, 198, 204, 223, 231, 238, 252, 264, 306, 308, 357, 374, 396, 408, 446, 462, 476, 504, 561, 612, 616, 669, 693, 714, 748, 792, 892, 924, 952, 1071, 1122, 1224, 1309, 1338, 1386, 1428, 1496, 1561, 1683, 1784, 1848, 2007, 2142, 2244, 2453, 2618, 2676, 2772, 2856, 3122, 3366, 3791, 3927, 4014, 4284, 4488, 4683, 4906, 5236, 5352, 5544, 6244, 6732, 7359, 7582, 7854, 8028, 8568, 9366, 9812, 10472, 11373, 11781, 12488, 13464, 14049, 14718, 15164, 15708, 16056, 17171, 18732, 19624, 22077, 22746, 23562, 26537, 28098, 29436, 30328, 31416, 34119, 34342, 37464, 41701, 44154, 45492, 47124, 51513, 53074, 56196, 58872, 68238, 68684, 79611, 83402, 88308, 90984, 94248, 103026, 106148, 112392, 125103, 136476, 137368, 154539, 159222, 166804, 176616, 206052, 212296, 238833, 250206, 272952, 291907, 309078, 318444, 333608, 375309, 412104, 477666, 500412, 583814, 618156, 636888, 750618, 875721, 955332, 1000824, 1167628, 1236312, 1501236, 1751442, 1910664, 2335256, 2627163, 3002472, 3502884, 5254326, 7005768, 10508652, 21017304]

約数ペア:

[(1, 21017304), (2, 10508652), (3, 7005768), (4, 5254326), (6, 3502884), (7, 3002472), (8, 2627163), (9, 2335256), (11, 1910664), (12, 1751442), (14, 1501236), (17, 1236312), (18, 1167628), (21, 1000824), (22, 955332), (24, 875721), (28, 750618), (33, 636888), (34, 618156), (36, 583814), (42, 500412), (44, 477666), (51, 412104), (56, 375309), (63, 333608), (66, 318444), (68, 309078), (72, 291907), (77, 272952), (84, 250206), (88, 238833), (99, 212296), (102, 206052), (119, 176616), (126, 166804), (132, 159222), (136, 154539), (153, 137368), (154, 136476), (168, 125103), (187, 112392), (198, 106148), (204, 103026), (223, 94248), (231, 90984), (238, 88308), (252, 83402), (264, 79611), (306, 68684), (308, 68238), (357, 58872), (374, 56196), (396, 53074), (408, 51513), (446, 47124), (462, 45492), (476, 44154), (504, 41701), (561, 37464), (612, 34342), (616, 34119), (669, 31416), (693, 30328), (714, 29436), (748, 28098), (792, 26537), (892, 23562), (924, 22746), (952, 22077), (1071, 19624), (1122, 18732), (1224, 17171), (1309, 16056), (1338, 15708), (1386, 15164), (1428, 14718), (1496, 14049), (1561, 13464), (1683, 12488), (1784, 11781), (1848, 11373), (2007, 10472), (2142, 9812), (2244, 9366), (2453, 8568), (2618, 8028), (2676, 7854), (2772, 7582), (2856, 7359), (3122, 6732), (3366, 6244), (3791, 5544), (3927, 5352), (4014, 5236), (4284, 4906), (4488, 4683)]