12875920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1$

素因数の和:272

約数の個数: 80

約数和(自身を含む): 32408640

約数和(自身を除く): 19532720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 43, 76, 80, 86, 95, 152, 172, 190, 197, 215, 304, 344, 380, 394, 430, 688, 760, 788, 817, 860, 985, 1520, 1576, 1634, 1720, 1970, 3152, 3268, 3440, 3743, 3940, 4085, 6536, 7486, 7880, 8170, 8471, 13072, 14972, 15760, 16340, 16942, 18715, 29944, 32680, 33884, 37430, 42355, 59888, 65360, 67768, 74860, 84710, 135536, 149720, 160949, 169420, 299440, 321898, 338840, 643796, 677680, 804745, 1287592, 1609490, 2575184, 3218980, 6437960, 12875920]

約数ペア:

[(1, 12875920), (2, 6437960), (4, 3218980), (5, 2575184), (8, 1609490), (10, 1287592), (16, 804745), (19, 677680), (20, 643796), (38, 338840), (40, 321898), (43, 299440), (76, 169420), (80, 160949), (86, 149720), (95, 135536), (152, 84710), (172, 74860), (190, 67768), (197, 65360), (215, 59888), (304, 42355), (344, 37430), (380, 33884), (394, 32680), (430, 29944), (688, 18715), (760, 16942), (788, 16340), (817, 15760), (860, 14972), (985, 13072), (1520, 8471), (1576, 8170), (1634, 7880), (1720, 7486), (1970, 6536), (3152, 4085), (3268, 3940), (3440, 3743)]