21025312

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:111

約数の個数: 144

約数和(自身を含む): 55847232

約数和(自身を除く): 34821920

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 23, 28, 32, 44, 46, 49, 53, 56, 77, 88, 92, 98, 106, 112, 154, 161, 176, 184, 196, 212, 224, 253, 308, 322, 352, 368, 371, 392, 424, 506, 539, 583, 616, 644, 736, 742, 784, 848, 1012, 1078, 1127, 1166, 1219, 1232, 1288, 1484, 1568, 1696, 1771, 2024, 2156, 2254, 2332, 2438, 2464, 2576, 2597, 2968, 3542, 4048, 4081, 4312, 4508, 4664, 4876, 5152, 5194, 5936, 7084, 8096, 8162, 8533, 8624, 9016, 9328, 9752, 10388, 11872, 12397, 13409, 14168, 16324, 17066, 17248, 18032, 18656, 19504, 20776, 24794, 26818, 28336, 28567, 32648, 34132, 36064, 39008, 41552, 49588, 53636, 56672, 57134, 59731, 65296, 68264, 83104, 93863, 99176, 107272, 114268, 119462, 130592, 136528, 187726, 198352, 214544, 228536, 238924, 273056, 375452, 396704, 429088, 457072, 477848, 657041, 750904, 914144, 955696, 1314082, 1501808, 1911392, 2628164, 3003616, 5256328, 10512656, 21025312]

約数ペア:

[(1, 21025312), (2, 10512656), (4, 5256328), (7, 3003616), (8, 2628164), (11, 1911392), (14, 1501808), (16, 1314082), (22, 955696), (23, 914144), (28, 750904), (32, 657041), (44, 477848), (46, 457072), (49, 429088), (53, 396704), (56, 375452), (77, 273056), (88, 238924), (92, 228536), (98, 214544), (106, 198352), (112, 187726), (154, 136528), (161, 130592), (176, 119462), (184, 114268), (196, 107272), (212, 99176), (224, 93863), (253, 83104), (308, 68264), (322, 65296), (352, 59731), (368, 57134), (371, 56672), (392, 53636), (424, 49588), (506, 41552), (539, 39008), (583, 36064), (616, 34132), (644, 32648), (736, 28567), (742, 28336), (784, 26818), (848, 24794), (1012, 20776), (1078, 19504), (1127, 18656), (1166, 18032), (1219, 17248), (1232, 17066), (1288, 16324), (1484, 14168), (1568, 13409), (1696, 12397), (1771, 11872), (2024, 10388), (2156, 9752), (2254, 9328), (2332, 9016), (2438, 8624), (2464, 8533), (2576, 8162), (2597, 8096), (2968, 7084), (3542, 5936), (4048, 5194), (4081, 5152), (4312, 4876), (4508, 4664)]