20782790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{337}}^1\times {\mathrm{881}}^1$

素因数の和:1232

約数の個数: 32

約数和(自身を含む): 42928704

約数和(自身を除く): 22145914

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 337, 674, 881, 1685, 1762, 2359, 3370, 4405, 4718, 6167, 8810, 11795, 12334, 23590, 30835, 61670, 296897, 593794, 1484485, 2078279, 2968970, 4156558, 10391395, 20782790]

約数ペア:

[(1, 20782790), (2, 10391395), (5, 4156558), (7, 2968970), (10, 2078279), (14, 1484485), (35, 593794), (70, 296897), (337, 61670), (674, 30835), (881, 23590), (1685, 12334), (1762, 11795), (2359, 8810), (3370, 6167), (4405, 4718)]