71685080

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{12893}}^1$

素因数の和:13043

約数の個数: 32

約数和(自身を含む): 162464400

約数和(自身を除く): 90779320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5560, 12893, 25786, 51572, 64465, 103144, 128930, 257860, 515720, 1792127, 3584254, 7168508, 8960635, 14337016, 17921270, 35842540, 71685080]

約数ペア:

[(1, 71685080), (2, 35842540), (4, 17921270), (5, 14337016), (8, 8960635), (10, 7168508), (20, 3584254), (40, 1792127), (139, 515720), (278, 257860), (556, 128930), (695, 103144), (1112, 64465), (1390, 51572), (2780, 25786), (5560, 12893)]