51540280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{2857}}^1$

素因数の和:2920

約数の個数: 64

約数和(自身を含む): 129638880

約数和(自身を除く): 78098600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1640, 1804, 2255, 2857, 3608, 4510, 5714, 9020, 11428, 14285, 18040, 22856, 28570, 31427, 57140, 62854, 114280, 117137, 125708, 157135, 234274, 251416, 314270, 468548, 585685, 628540, 937096, 1171370, 1257080, 1288507, 2342740, 2577014, 4685480, 5154028, 6442535, 10308056, 12885070, 25770140, 51540280]

約数ペア:

[(1, 51540280), (2, 25770140), (4, 12885070), (5, 10308056), (8, 6442535), (10, 5154028), (11, 4685480), (20, 2577014), (22, 2342740), (40, 1288507), (41, 1257080), (44, 1171370), (55, 937096), (82, 628540), (88, 585685), (110, 468548), (164, 314270), (205, 251416), (220, 234274), (328, 157135), (410, 125708), (440, 117137), (451, 114280), (820, 62854), (902, 57140), (1640, 31427), (1804, 28570), (2255, 22856), (2857, 18040), (3608, 14285), (4510, 11428), (5714, 9020)]