19962200

素因数分解:

$2^3\times 5^2\times {\mathrm{151}}^1\times {\mathrm{661}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 46790160

約数和(自身を除く): 26827960

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 151, 200, 302, 604, 661, 755, 1208, 1322, 1510, 2644, 3020, 3305, 3775, 5288, 6040, 6610, 7550, 13220, 15100, 16525, 26440, 30200, 33050, 66100, 99811, 132200, 199622, 399244, 499055, 798488, 998110, 1996220, 2495275, 3992440, 4990550, 9981100, 19962200]

約数ペア:

[(1, 19962200), (2, 9981100), (4, 4990550), (5, 3992440), (8, 2495275), (10, 1996220), (20, 998110), (25, 798488), (40, 499055), (50, 399244), (100, 199622), (151, 132200), (200, 99811), (302, 66100), (604, 33050), (661, 30200), (755, 26440), (1208, 16525), (1322, 15100), (1510, 13220), (2644, 7550), (3020, 6610), (3305, 6040), (3775, 5288)]