20178284560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1566637}}^1$

素因数の和:1566680

約数の個数: 80

約数和(自身を含む): 55947776256

約数和(自身を除く): 35769491696

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1610, 1840, 2576, 3220, 6440, 12880, 1566637, 3133274, 6266548, 7833185, 10966459, 12533096, 15666370, 21932918, 25066192, 31332740, 36032651, 43865836, 54832295, 62665480, 72065302, 87731672, 109664590, 125330960, 144130604, 175463344, 180163255, 219329180, 252228557, 288261208, 360326510, 438658360, 504457114, 576522416, 720653020, 877316720, 1008914228, 1261142785, 1441306040, 2017828456, 2522285570, 2882612080, 4035656912, 5044571140, 10089142280, 20178284560]

約数ペア:

[(1, 20178284560), (2, 10089142280), (4, 5044571140), (5, 4035656912), (7, 2882612080), (8, 2522285570), (10, 2017828456), (14, 1441306040), (16, 1261142785), (20, 1008914228), (23, 877316720), (28, 720653020), (35, 576522416), (40, 504457114), (46, 438658360), (56, 360326510), (70, 288261208), (80, 252228557), (92, 219329180), (112, 180163255), (115, 175463344), (140, 144130604), (161, 125330960), (184, 109664590), (230, 87731672), (280, 72065302), (322, 62665480), (368, 54832295), (460, 43865836), (560, 36032651), (644, 31332740), (805, 25066192), (920, 21932918), (1288, 15666370), (1610, 12533096), (1840, 10966459), (2576, 7833185), (3220, 6266548), (6440, 3133274), (12880, 1566637)]