218508740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{1087}}^1$

素因数の和:1161

約数の個数: 72

約数和(自身を含む): 505397760

約数和(自身を除く): 286889020

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 380, 437, 460, 529, 874, 1058, 1087, 1748, 2116, 2174, 2185, 2645, 4348, 4370, 5290, 5435, 8740, 10051, 10580, 10870, 20102, 20653, 21740, 25001, 40204, 41306, 50002, 50255, 82612, 100004, 100510, 103265, 125005, 201020, 206530, 250010, 413060, 475019, 500020, 575023, 950038, 1150046, 1900076, 2300092, 2375095, 2875115, 4750190, 5750230, 9500380, 10925437, 11500460, 21850874, 43701748, 54627185, 109254370, 218508740]

約数ペア:

[(1, 218508740), (2, 109254370), (4, 54627185), (5, 43701748), (10, 21850874), (19, 11500460), (20, 10925437), (23, 9500380), (38, 5750230), (46, 4750190), (76, 2875115), (92, 2375095), (95, 2300092), (115, 1900076), (190, 1150046), (230, 950038), (380, 575023), (437, 500020), (460, 475019), (529, 413060), (874, 250010), (1058, 206530), (1087, 201020), (1748, 125005), (2116, 103265), (2174, 100510), (2185, 100004), (2645, 82612), (4348, 50255), (4370, 50002), (5290, 41306), (5435, 40204), (8740, 25001), (10051, 21740), (10580, 20653), (10870, 20102)]