20496960

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{647}}^1$

素因数の和:681

約数の個数: 168

約数和(自身を含む): 77029056

約数和(自身を除く): 56532096

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 64, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 192, 198, 220, 240, 264, 288, 320, 330, 352, 360, 396, 440, 480, 495, 528, 576, 647, 660, 704, 720, 792, 880, 960, 990, 1056, 1294, 1320, 1440, 1584, 1760, 1941, 1980, 2112, 2588, 2640, 2880, 3168, 3235, 3520, 3882, 3960, 5176, 5280, 5823, 6336, 6470, 7117, 7764, 7920, 9705, 10352, 10560, 11646, 12940, 14234, 15528, 15840, 19410, 20704, 21351, 23292, 25880, 28468, 29115, 31056, 31680, 35585, 38820, 41408, 42702, 46584, 51760, 56936, 58230, 62112, 64053, 71170, 77640, 85404, 93168, 103520, 106755, 113872, 116460, 124224, 128106, 142340, 155280, 170808, 186336, 207040, 213510, 227744, 232920, 256212, 284680, 310560, 320265, 341616, 372672, 427020, 455488, 465840, 512424, 569360, 621120, 640530, 683232, 854040, 931680, 1024848, 1138720, 1281060, 1366464, 1708080, 1863360, 2049696, 2277440, 2562120, 3416160, 4099392, 5124240, 6832320, 10248480, 20496960]

約数ペア:

[(1, 20496960), (2, 10248480), (3, 6832320), (4, 5124240), (5, 4099392), (6, 3416160), (8, 2562120), (9, 2277440), (10, 2049696), (11, 1863360), (12, 1708080), (15, 1366464), (16, 1281060), (18, 1138720), (20, 1024848), (22, 931680), (24, 854040), (30, 683232), (32, 640530), (33, 621120), (36, 569360), (40, 512424), (44, 465840), (45, 455488), (48, 427020), (55, 372672), (60, 341616), (64, 320265), (66, 310560), (72, 284680), (80, 256212), (88, 232920), (90, 227744), (96, 213510), (99, 207040), (110, 186336), (120, 170808), (132, 155280), (144, 142340), (160, 128106), (165, 124224), (176, 116460), (180, 113872), (192, 106755), (198, 103520), (220, 93168), (240, 85404), (264, 77640), (288, 71170), (320, 64053), (330, 62112), (352, 58230), (360, 56936), (396, 51760), (440, 46584), (480, 42702), (495, 41408), (528, 38820), (576, 35585), (647, 31680), (660, 31056), (704, 29115), (720, 28468), (792, 25880), (880, 23292), (960, 21351), (990, 20704), (1056, 19410), (1294, 15840), (1320, 15528), (1440, 14234), (1584, 12940), (1760, 11646), (1941, 10560), (1980, 10352), (2112, 9705), (2588, 7920), (2640, 7764), (2880, 7117), (3168, 6470), (3235, 6336), (3520, 5823), (3882, 5280), (3960, 5176)]