28391880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1$

素因数の和:319

約数の個数: 128

約数和(自身を含む): 94193280

約数和(自身を除く): 65801400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 137, 157, 165, 220, 264, 274, 314, 330, 411, 440, 471, 548, 628, 660, 685, 785, 822, 942, 1096, 1256, 1320, 1370, 1507, 1570, 1644, 1727, 1884, 2055, 2355, 2740, 3014, 3140, 3288, 3454, 3768, 4110, 4521, 4710, 5181, 5480, 6028, 6280, 6908, 7535, 8220, 8635, 9042, 9420, 10362, 12056, 13816, 15070, 16440, 17270, 18084, 18840, 20724, 21509, 22605, 25905, 30140, 34540, 36168, 41448, 43018, 45210, 51810, 60280, 64527, 69080, 86036, 90420, 103620, 107545, 129054, 172072, 180840, 207240, 215090, 236599, 258108, 322635, 430180, 473198, 516216, 645270, 709797, 860360, 946396, 1182995, 1290540, 1419594, 1892792, 2365990, 2581080, 2839188, 3548985, 4731980, 5678376, 7097970, 9463960, 14195940, 28391880]

約数ペア:

[(1, 28391880), (2, 14195940), (3, 9463960), (4, 7097970), (5, 5678376), (6, 4731980), (8, 3548985), (10, 2839188), (11, 2581080), (12, 2365990), (15, 1892792), (20, 1419594), (22, 1290540), (24, 1182995), (30, 946396), (33, 860360), (40, 709797), (44, 645270), (55, 516216), (60, 473198), (66, 430180), (88, 322635), (110, 258108), (120, 236599), (132, 215090), (137, 207240), (157, 180840), (165, 172072), (220, 129054), (264, 107545), (274, 103620), (314, 90420), (330, 86036), (411, 69080), (440, 64527), (471, 60280), (548, 51810), (628, 45210), (660, 43018), (685, 41448), (785, 36168), (822, 34540), (942, 30140), (1096, 25905), (1256, 22605), (1320, 21509), (1370, 20724), (1507, 18840), (1570, 18084), (1644, 17270), (1727, 16440), (1884, 15070), (2055, 13816), (2355, 12056), (2740, 10362), (3014, 9420), (3140, 9042), (3288, 8635), (3454, 8220), (3768, 7535), (4110, 6908), (4521, 6280), (4710, 6028), (5181, 5480)]