19996724

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:296

約数の個数: 48

約数和(自身を含む): 39989376

約数和(自身を除く): 19992652

約数列:

[1, 2, 4, 11, 22, 37, 44, 71, 74, 142, 148, 173, 284, 346, 407, 692, 781, 814, 1562, 1628, 1903, 2627, 3124, 3806, 5254, 6401, 7612, 10508, 12283, 12802, 24566, 25604, 28897, 49132, 57794, 70411, 115588, 135113, 140822, 270226, 281644, 454471, 540452, 908942, 1817884, 4999181, 9998362, 19996724]

約数ペア:

[(1, 19996724), (2, 9998362), (4, 4999181), (11, 1817884), (22, 908942), (37, 540452), (44, 454471), (71, 281644), (74, 270226), (142, 140822), (148, 135113), (173, 115588), (284, 70411), (346, 57794), (407, 49132), (692, 28897), (781, 25604), (814, 24566), (1562, 12802), (1628, 12283), (1903, 10508), (2627, 7612), (3124, 6401), (3806, 5254)]