20681688

素因数分解:

$2^3\times 3^1\times {\mathrm{509}}^1\times {\mathrm{1693}}^1$

素因数の和:2211

約数の個数: 32

約数和(自身を含む): 51836400

約数和(自身を除く): 31154712

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 509, 1018, 1527, 1693, 2036, 3054, 3386, 4072, 5079, 6108, 6772, 10158, 12216, 13544, 20316, 40632, 861737, 1723474, 2585211, 3446948, 5170422, 6893896, 10340844, 20681688]

約数ペア:

[(1, 20681688), (2, 10340844), (3, 6893896), (4, 5170422), (6, 3446948), (8, 2585211), (12, 1723474), (24, 861737), (509, 40632), (1018, 20316), (1527, 13544), (1693, 12216), (2036, 10158), (3054, 6772), (3386, 6108), (4072, 5079)]