21043440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2657}}^1$

素因数の和:2687

約数の個数: 120

約数和(自身を含む): 77124528

約数和(自身を除く): 56081088

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 132, 144, 165, 176, 180, 198, 220, 240, 264, 330, 360, 396, 440, 495, 528, 660, 720, 792, 880, 990, 1320, 1584, 1980, 2640, 2657, 3960, 5314, 7920, 7971, 10628, 13285, 15942, 21256, 23913, 26570, 29227, 31884, 39855, 42512, 47826, 53140, 58454, 63768, 79710, 87681, 95652, 106280, 116908, 119565, 127536, 146135, 159420, 175362, 191304, 212560, 233816, 239130, 263043, 292270, 318840, 350724, 382608, 438405, 467632, 478260, 526086, 584540, 637680, 701448, 876810, 956520, 1052172, 1169080, 1315215, 1402896, 1753620, 1913040, 2104344, 2338160, 2630430, 3507240, 4208688, 5260860, 7014480, 10521720, 21043440]

約数ペア:

[(1, 21043440), (2, 10521720), (3, 7014480), (4, 5260860), (5, 4208688), (6, 3507240), (8, 2630430), (9, 2338160), (10, 2104344), (11, 1913040), (12, 1753620), (15, 1402896), (16, 1315215), (18, 1169080), (20, 1052172), (22, 956520), (24, 876810), (30, 701448), (33, 637680), (36, 584540), (40, 526086), (44, 478260), (45, 467632), (48, 438405), (55, 382608), (60, 350724), (66, 318840), (72, 292270), (80, 263043), (88, 239130), (90, 233816), (99, 212560), (110, 191304), (120, 175362), (132, 159420), (144, 146135), (165, 127536), (176, 119565), (180, 116908), (198, 106280), (220, 95652), (240, 87681), (264, 79710), (330, 63768), (360, 58454), (396, 53140), (440, 47826), (495, 42512), (528, 39855), (660, 31884), (720, 29227), (792, 26570), (880, 23913), (990, 21256), (1320, 15942), (1584, 13285), (1980, 10628), (2640, 7971), (2657, 7920), (3960, 5314)]