20450197480

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{709}}^1\times {\mathrm{19489}}^1$

素因数の和:20246

約数の個数: 64

約数和(自身を含む): 47325618000

約数和(自身を除く): 26875420520

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 709, 740, 1418, 1480, 2836, 3545, 5672, 7090, 14180, 19489, 26233, 28360, 38978, 52466, 77956, 97445, 104932, 131165, 155912, 194890, 209864, 262330, 389780, 524660, 721093, 779560, 1049320, 1442186, 2884372, 3605465, 5768744, 7210930, 13817701, 14421860, 27635402, 28843720, 55270804, 69088505, 110541608, 138177010, 276354020, 511254937, 552708040, 1022509874, 2045019748, 2556274685, 4090039496, 5112549370, 10225098740, 20450197480]

約数ペア:

[(1, 20450197480), (2, 10225098740), (4, 5112549370), (5, 4090039496), (8, 2556274685), (10, 2045019748), (20, 1022509874), (37, 552708040), (40, 511254937), (74, 276354020), (148, 138177010), (185, 110541608), (296, 69088505), (370, 55270804), (709, 28843720), (740, 27635402), (1418, 14421860), (1480, 13817701), (2836, 7210930), (3545, 5768744), (5672, 3605465), (7090, 2884372), (14180, 1442186), (19489, 1049320), (26233, 779560), (28360, 721093), (38978, 524660), (52466, 389780), (77956, 262330), (97445, 209864), (104932, 194890), (131165, 155912)]