20784784760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2423}}^1\times {\mathrm{11287}}^1$

素因数の和:13740

約数の個数: 64

約数和(自身を含む): 49251801600

約数和(自身を除く): 28467016840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 2423, 4846, 9692, 11287, 12115, 19384, 22574, 24230, 45148, 46037, 48460, 56435, 90296, 92074, 96920, 112870, 184148, 214453, 225740, 230185, 368296, 428906, 451480, 460370, 857812, 920740, 1072265, 1715624, 1841480, 2144530, 4289060, 8578120, 27348401, 54696802, 109393604, 136742005, 218787208, 273484010, 519619619, 546968020, 1039239238, 1093936040, 2078478476, 2598098095, 4156956952, 5196196190, 10392392380, 20784784760]

約数ペア:

[(1, 20784784760), (2, 10392392380), (4, 5196196190), (5, 4156956952), (8, 2598098095), (10, 2078478476), (19, 1093936040), (20, 1039239238), (38, 546968020), (40, 519619619), (76, 273484010), (95, 218787208), (152, 136742005), (190, 109393604), (380, 54696802), (760, 27348401), (2423, 8578120), (4846, 4289060), (9692, 2144530), (11287, 1841480), (12115, 1715624), (19384, 1072265), (22574, 920740), (24230, 857812), (45148, 460370), (46037, 451480), (48460, 428906), (56435, 368296), (90296, 230185), (92074, 225740), (96920, 214453), (112870, 184148)]