12876280

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{661}}^1$

素因数の和:1159

約数の個数: 32

約数和(自身を含む): 29075040

約数和(自身を除く): 16198760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 661, 974, 1322, 1948, 2435, 2644, 3305, 3896, 4870, 5288, 6610, 9740, 13220, 19480, 26440, 321907, 643814, 1287628, 1609535, 2575256, 3219070, 6438140, 12876280]

約数ペア:

[(1, 12876280), (2, 6438140), (4, 3219070), (5, 2575256), (8, 1609535), (10, 1287628), (20, 643814), (40, 321907), (487, 26440), (661, 19480), (974, 13220), (1322, 9740), (1948, 6610), (2435, 5288), (2644, 4870), (3305, 3896)]