21226240

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 61221888

約数和(自身を除く): 39995648

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 64, 70, 80, 92, 103, 112, 115, 128, 140, 160, 161, 184, 206, 224, 230, 256, 280, 320, 322, 368, 412, 448, 460, 515, 560, 640, 644, 721, 736, 805, 824, 896, 920, 1030, 1120, 1280, 1288, 1442, 1472, 1610, 1648, 1792, 1840, 2060, 2240, 2369, 2576, 2884, 2944, 3220, 3296, 3605, 3680, 4120, 4480, 4738, 5152, 5768, 5888, 6440, 6592, 7210, 7360, 8240, 8960, 9476, 10304, 11536, 11845, 12880, 13184, 14420, 14720, 16480, 16583, 18952, 20608, 23072, 23690, 25760, 26368, 28840, 29440, 32960, 33166, 37904, 41216, 46144, 47380, 51520, 57680, 65920, 66332, 75808, 82915, 92288, 94760, 103040, 115360, 131840, 132664, 151616, 165830, 184576, 189520, 206080, 230720, 265328, 303232, 331660, 379040, 461440, 530656, 606464, 663320, 758080, 922880, 1061312, 1326640, 1516160, 2122624, 2653280, 3032320, 4245248, 5306560, 10613120, 21226240]

約数ペア:

[(1, 21226240), (2, 10613120), (4, 5306560), (5, 4245248), (7, 3032320), (8, 2653280), (10, 2122624), (14, 1516160), (16, 1326640), (20, 1061312), (23, 922880), (28, 758080), (32, 663320), (35, 606464), (40, 530656), (46, 461440), (56, 379040), (64, 331660), (70, 303232), (80, 265328), (92, 230720), (103, 206080), (112, 189520), (115, 184576), (128, 165830), (140, 151616), (160, 132664), (161, 131840), (184, 115360), (206, 103040), (224, 94760), (230, 92288), (256, 82915), (280, 75808), (320, 66332), (322, 65920), (368, 57680), (412, 51520), (448, 47380), (460, 46144), (515, 41216), (560, 37904), (640, 33166), (644, 32960), (721, 29440), (736, 28840), (805, 26368), (824, 25760), (896, 23690), (920, 23072), (1030, 20608), (1120, 18952), (1280, 16583), (1288, 16480), (1442, 14720), (1472, 14420), (1610, 13184), (1648, 12880), (1792, 11845), (1840, 11536), (2060, 10304), (2240, 9476), (2369, 8960), (2576, 8240), (2884, 7360), (2944, 7210), (3220, 6592), (3296, 6440), (3605, 5888), (3680, 5768), (4120, 5152), (4480, 4738)]