20804012

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{827}}^1$

素因数の和:1181

約数の個数: 24

約数和(自身を含む): 38485440

約数和(自身を除く): 17681428

約数列:

[1, 2, 4, 19, 38, 76, 331, 662, 827, 1324, 1654, 3308, 6289, 12578, 15713, 25156, 31426, 62852, 273737, 547474, 1094948, 5201003, 10402006, 20804012]

約数ペア:

[(1, 20804012), (2, 10402006), (4, 5201003), (19, 1094948), (38, 547474), (76, 273737), (331, 62852), (662, 31426), (827, 25156), (1324, 15713), (1654, 12578), (3308, 6289)]