20417760

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1289}}^1$

素因数の和:1321

約数の個数: 144

約数和(自身を含む): 76068720

約数和(自身を除く): 55650960

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, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 198, 220, 240, 264, 288, 330, 352, 360, 396, 440, 480, 495, 528, 660, 720, 792, 880, 990, 1056, 1289, 1320, 1440, 1584, 1760, 1980, 2578, 2640, 3168, 3867, 3960, 5156, 5280, 6445, 7734, 7920, 10312, 11601, 12890, 14179, 15468, 15840, 19335, 20624, 23202, 25780, 28358, 30936, 38670, 41248, 42537, 46404, 51560, 56716, 58005, 61872, 70895, 77340, 85074, 92808, 103120, 113432, 116010, 123744, 127611, 141790, 154680, 170148, 185616, 206240, 212685, 226864, 232020, 255222, 283580, 309360, 340296, 371232, 425370, 453728, 464040, 510444, 567160, 618720, 638055, 680592, 850740, 928080, 1020888, 1134320, 1276110, 1361184, 1701480, 1856160, 2041776, 2268640, 2552220, 3402960, 4083552, 5104440, 6805920, 10208880, 20417760]

約数ペア:

[(1, 20417760), (2, 10208880), (3, 6805920), (4, 5104440), (5, 4083552), (6, 3402960), (8, 2552220), (9, 2268640), (10, 2041776), (11, 1856160), (12, 1701480), (15, 1361184), (16, 1276110), (18, 1134320), (20, 1020888), (22, 928080), (24, 850740), (30, 680592), (32, 638055), (33, 618720), (36, 567160), (40, 510444), (44, 464040), (45, 453728), (48, 425370), (55, 371232), (60, 340296), (66, 309360), (72, 283580), (80, 255222), (88, 232020), (90, 226864), (96, 212685), (99, 206240), (110, 185616), (120, 170148), (132, 154680), (144, 141790), (160, 127611), (165, 123744), (176, 116010), (180, 113432), (198, 103120), (220, 92808), (240, 85074), (264, 77340), (288, 70895), (330, 61872), (352, 58005), (360, 56716), (396, 51560), (440, 46404), (480, 42537), (495, 41248), (528, 38670), (660, 30936), (720, 28358), (792, 25780), (880, 23202), (990, 20624), (1056, 19335), (1289, 15840), (1320, 15468), (1440, 14179), (1584, 12890), (1760, 11601), (1980, 10312), (2578, 7920), (2640, 7734), (3168, 6445), (3867, 5280), (3960, 5156)]