20940480

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{661}}^1$

素因数の和:695

約数の個数: 168

約数和(自身を含む): 78693264

約数和(自身を除く): 57752784

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, 660, 661, 704, 720, 792, 880, 960, 990, 1056, 1320, 1322, 1440, 1584, 1760, 1980, 1983, 2112, 2640, 2644, 2880, 3168, 3305, 3520, 3960, 3966, 5280, 5288, 5949, 6336, 6610, 7271, 7920, 7932, 9915, 10560, 10576, 11898, 13220, 14542, 15840, 15864, 19830, 21152, 21813, 23796, 26440, 29084, 29745, 31680, 31728, 36355, 39660, 42304, 43626, 47592, 52880, 58168, 59490, 63456, 65439, 72710, 79320, 87252, 95184, 105760, 109065, 116336, 118980, 126912, 130878, 145420, 158640, 174504, 190368, 211520, 218130, 232672, 237960, 261756, 290840, 317280, 327195, 349008, 380736, 436260, 465344, 475920, 523512, 581680, 634560, 654390, 698016, 872520, 951840, 1047024, 1163360, 1308780, 1396032, 1745040, 1903680, 2094048, 2326720, 2617560, 3490080, 4188096, 5235120, 6980160, 10470240, 20940480]

約数ペア:

[(1, 20940480), (2, 10470240), (3, 6980160), (4, 5235120), (5, 4188096), (6, 3490080), (8, 2617560), (9, 2326720), (10, 2094048), (11, 1903680), (12, 1745040), (15, 1396032), (16, 1308780), (18, 1163360), (20, 1047024), (22, 951840), (24, 872520), (30, 698016), (32, 654390), (33, 634560), (36, 581680), (40, 523512), (44, 475920), (45, 465344), (48, 436260), (55, 380736), (60, 349008), (64, 327195), (66, 317280), (72, 290840), (80, 261756), (88, 237960), (90, 232672), (96, 218130), (99, 211520), (110, 190368), (120, 174504), (132, 158640), (144, 145420), (160, 130878), (165, 126912), (176, 118980), (180, 116336), (192, 109065), (198, 105760), (220, 95184), (240, 87252), (264, 79320), (288, 72710), (320, 65439), (330, 63456), (352, 59490), (360, 58168), (396, 52880), (440, 47592), (480, 43626), (495, 42304), (528, 39660), (576, 36355), (660, 31728), (661, 31680), (704, 29745), (720, 29084), (792, 26440), (880, 23796), (960, 21813), (990, 21152), (1056, 19830), (1320, 15864), (1322, 15840), (1440, 14542), (1584, 13220), (1760, 11898), (1980, 10576), (1983, 10560), (2112, 9915), (2640, 7932), (2644, 7920), (2880, 7271), (3168, 6610), (3305, 6336), (3520, 5949), (3960, 5288), (3966, 5280)]