20375880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{191}}^1$

素因数の和:339

約数の個数: 128

約数和(自身を含む): 70778880

約数和(自身を除く): 50403000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 127, 140, 168, 191, 210, 254, 280, 381, 382, 420, 508, 573, 635, 762, 764, 840, 889, 955, 1016, 1146, 1270, 1337, 1524, 1528, 1778, 1905, 1910, 2292, 2540, 2667, 2674, 2865, 3048, 3556, 3810, 3820, 4011, 4445, 4584, 5080, 5334, 5348, 5730, 6685, 7112, 7620, 7640, 8022, 8890, 10668, 10696, 11460, 13335, 13370, 15240, 16044, 17780, 20055, 21336, 22920, 24257, 26670, 26740, 32088, 35560, 40110, 48514, 53340, 53480, 72771, 80220, 97028, 106680, 121285, 145542, 160440, 169799, 194056, 242570, 291084, 339598, 363855, 485140, 509397, 582168, 679196, 727710, 848995, 970280, 1018794, 1358392, 1455420, 1697990, 2037588, 2546985, 2910840, 3395980, 4075176, 5093970, 6791960, 10187940, 20375880]

約数ペア:

[(1, 20375880), (2, 10187940), (3, 6791960), (4, 5093970), (5, 4075176), (6, 3395980), (7, 2910840), (8, 2546985), (10, 2037588), (12, 1697990), (14, 1455420), (15, 1358392), (20, 1018794), (21, 970280), (24, 848995), (28, 727710), (30, 679196), (35, 582168), (40, 509397), (42, 485140), (56, 363855), (60, 339598), (70, 291084), (84, 242570), (105, 194056), (120, 169799), (127, 160440), (140, 145542), (168, 121285), (191, 106680), (210, 97028), (254, 80220), (280, 72771), (381, 53480), (382, 53340), (420, 48514), (508, 40110), (573, 35560), (635, 32088), (762, 26740), (764, 26670), (840, 24257), (889, 22920), (955, 21336), (1016, 20055), (1146, 17780), (1270, 16044), (1337, 15240), (1524, 13370), (1528, 13335), (1778, 11460), (1905, 10696), (1910, 10668), (2292, 8890), (2540, 8022), (2667, 7640), (2674, 7620), (2865, 7112), (3048, 6685), (3556, 5730), (3810, 5348), (3820, 5334), (4011, 5080), (4445, 4584)]