20378435

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1291}}^1$

素因数の和:1355

約数の個数: 32

約数和(自身を含む): 31256064

約数和(自身を除く): 10877629

約数列:

[1, 5, 7, 11, 35, 41, 55, 77, 205, 287, 385, 451, 1291, 1435, 2255, 3157, 6455, 9037, 14201, 15785, 45185, 52931, 71005, 99407, 264655, 370517, 497035, 582241, 1852585, 2911205, 4075687, 20378435]

約数ペア:

[(1, 20378435), (5, 4075687), (7, 2911205), (11, 1852585), (35, 582241), (41, 497035), (55, 370517), (77, 264655), (205, 99407), (287, 71005), (385, 52931), (451, 45185), (1291, 15785), (1435, 14201), (2255, 9037), (3157, 6455)]