81825920

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:286

約数の個数: 128

約数和(自身を含む): 218116800

約数和(自身を除く): 136290880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 59, 64, 80, 88, 110, 118, 128, 160, 176, 197, 220, 236, 295, 320, 352, 394, 440, 472, 590, 640, 649, 704, 788, 880, 944, 985, 1180, 1298, 1408, 1576, 1760, 1888, 1970, 2167, 2360, 2596, 3152, 3245, 3520, 3776, 3940, 4334, 4720, 5192, 6304, 6490, 7040, 7552, 7880, 8668, 9440, 10384, 10835, 11623, 12608, 12980, 15760, 17336, 18880, 20768, 21670, 23246, 25216, 25960, 31520, 34672, 37760, 41536, 43340, 46492, 51920, 58115, 63040, 69344, 83072, 86680, 92984, 103840, 116230, 126080, 127853, 138688, 173360, 185968, 207680, 232460, 255706, 277376, 346720, 371936, 415360, 464920, 511412, 639265, 693440, 743872, 929840, 1022824, 1278530, 1386880, 1487744, 1859680, 2045648, 2557060, 3719360, 4091296, 5114120, 7438720, 8182592, 10228240, 16365184, 20456480, 40912960, 81825920]

約数ペア:

[(1, 81825920), (2, 40912960), (4, 20456480), (5, 16365184), (8, 10228240), (10, 8182592), (11, 7438720), (16, 5114120), (20, 4091296), (22, 3719360), (32, 2557060), (40, 2045648), (44, 1859680), (55, 1487744), (59, 1386880), (64, 1278530), (80, 1022824), (88, 929840), (110, 743872), (118, 693440), (128, 639265), (160, 511412), (176, 464920), (197, 415360), (220, 371936), (236, 346720), (295, 277376), (320, 255706), (352, 232460), (394, 207680), (440, 185968), (472, 173360), (590, 138688), (640, 127853), (649, 126080), (704, 116230), (788, 103840), (880, 92984), (944, 86680), (985, 83072), (1180, 69344), (1298, 63040), (1408, 58115), (1576, 51920), (1760, 46492), (1888, 43340), (1970, 41536), (2167, 37760), (2360, 34672), (2596, 31520), (3152, 25960), (3245, 25216), (3520, 23246), (3776, 21670), (3940, 20768), (4334, 18880), (4720, 17336), (5192, 15760), (6304, 12980), (6490, 12608), (7040, 11623), (7552, 10835), (7880, 10384), (8668, 9440)]