21056560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1979}}^1$

素因数の和:2018

約数の個数: 80

約数和(自身を含む): 58924800

約数和(自身を除く): 37868240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 1979, 2128, 2660, 3958, 5320, 7916, 9895, 10640, 13853, 15832, 19790, 27706, 31664, 37601, 39580, 55412, 69265, 75202, 79160, 110824, 138530, 150404, 158320, 188005, 221648, 263207, 277060, 300808, 376010, 526414, 554120, 601616, 752020, 1052828, 1108240, 1316035, 1504040, 2105656, 2632070, 3008080, 4211312, 5264140, 10528280, 21056560]

約数ペア:

[(1, 21056560), (2, 10528280), (4, 5264140), (5, 4211312), (7, 3008080), (8, 2632070), (10, 2105656), (14, 1504040), (16, 1316035), (19, 1108240), (20, 1052828), (28, 752020), (35, 601616), (38, 554120), (40, 526414), (56, 376010), (70, 300808), (76, 277060), (80, 263207), (95, 221648), (112, 188005), (133, 158320), (140, 150404), (152, 138530), (190, 110824), (266, 79160), (280, 75202), (304, 69265), (380, 55412), (532, 39580), (560, 37601), (665, 31664), (760, 27706), (1064, 19790), (1330, 15832), (1520, 13853), (1979, 10640), (2128, 9895), (2660, 7916), (3958, 5320)]