19836760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{607}}^1$

素因数の和:680

約数の個数: 64

約数和(自身を含む): 48153600

約数和(自身を除く): 28316840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 607, 760, 817, 860, 1214, 1634, 1720, 2428, 3035, 3268, 4085, 4856, 6070, 6536, 8170, 11533, 12140, 16340, 23066, 24280, 26101, 32680, 46132, 52202, 57665, 92264, 104404, 115330, 130505, 208808, 230660, 261010, 461320, 495919, 522020, 991838, 1044040, 1983676, 2479595, 3967352, 4959190, 9918380, 19836760]

約数ペア:

[(1, 19836760), (2, 9918380), (4, 4959190), (5, 3967352), (8, 2479595), (10, 1983676), (19, 1044040), (20, 991838), (38, 522020), (40, 495919), (43, 461320), (76, 261010), (86, 230660), (95, 208808), (152, 130505), (172, 115330), (190, 104404), (215, 92264), (344, 57665), (380, 52202), (430, 46132), (607, 32680), (760, 26101), (817, 24280), (860, 23066), (1214, 16340), (1634, 12140), (1720, 11533), (2428, 8170), (3035, 6536), (3268, 6070), (4085, 4856)]