81554080

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:366

約数の個数: 96

約数和(自身を含む): 205329600

約数和(自身を除く): 123775520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 139, 152, 160, 190, 193, 278, 304, 380, 386, 556, 608, 695, 760, 772, 965, 1112, 1390, 1520, 1544, 1930, 2224, 2641, 2780, 3040, 3088, 3667, 3860, 4448, 5282, 5560, 6176, 7334, 7720, 10564, 11120, 13205, 14668, 15440, 18335, 21128, 22240, 26410, 26827, 29336, 30880, 36670, 42256, 52820, 53654, 58672, 73340, 84512, 105640, 107308, 117344, 134135, 146680, 211280, 214616, 268270, 293360, 422560, 429232, 509713, 536540, 586720, 858464, 1019426, 1073080, 2038852, 2146160, 2548565, 4077704, 4292320, 5097130, 8155408, 10194260, 16310816, 20388520, 40777040, 81554080]

約数ペア:

[(1, 81554080), (2, 40777040), (4, 20388520), (5, 16310816), (8, 10194260), (10, 8155408), (16, 5097130), (19, 4292320), (20, 4077704), (32, 2548565), (38, 2146160), (40, 2038852), (76, 1073080), (80, 1019426), (95, 858464), (139, 586720), (152, 536540), (160, 509713), (190, 429232), (193, 422560), (278, 293360), (304, 268270), (380, 214616), (386, 211280), (556, 146680), (608, 134135), (695, 117344), (760, 107308), (772, 105640), (965, 84512), (1112, 73340), (1390, 58672), (1520, 53654), (1544, 52820), (1930, 42256), (2224, 36670), (2641, 30880), (2780, 29336), (3040, 26827), (3088, 26410), (3667, 22240), (3860, 21128), (4448, 18335), (5282, 15440), (5560, 14668), (6176, 13205), (7334, 11120), (7720, 10564)]