128762800

素因数分解:

$2^4\times 5^2\times {\mathrm{487}}^1\times {\mathrm{661}}^1$

素因数の和:1166

約数の個数: 60

約数和(自身を含む): 310456816

約数和(自身を除く): 181694016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 487, 661, 974, 1322, 1948, 2435, 2644, 3305, 3896, 4870, 5288, 6610, 7792, 9740, 10576, 12175, 13220, 16525, 19480, 24350, 26440, 33050, 38960, 48700, 52880, 66100, 97400, 132200, 194800, 264400, 321907, 643814, 1287628, 1609535, 2575256, 3219070, 5150512, 6438140, 8047675, 12876280, 16095350, 25752560, 32190700, 64381400, 128762800]

約数ペア:

[(1, 128762800), (2, 64381400), (4, 32190700), (5, 25752560), (8, 16095350), (10, 12876280), (16, 8047675), (20, 6438140), (25, 5150512), (40, 3219070), (50, 2575256), (80, 1609535), (100, 1287628), (200, 643814), (400, 321907), (487, 264400), (661, 194800), (974, 132200), (1322, 97400), (1948, 66100), (2435, 52880), (2644, 48700), (3305, 38960), (3896, 33050), (4870, 26440), (5288, 24350), (6610, 19480), (7792, 16525), (9740, 13220), (10576, 12175)]