21057840

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{9749}}^1$

素因数の和:9771

約数の個数: 80

約数和(自身を含む): 72540000

約数和(自身を除く): 51482160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160, 9749, 19498, 29247, 38996, 48745, 58494, 77992, 87741, 97490, 116988, 146235, 155984, 175482, 194980, 233976, 263223, 292470, 350964, 389960, 438705, 467952, 526446, 584940, 701928, 779920, 877410, 1052892, 1169880, 1316115, 1403856, 1754820, 2105784, 2339760, 2632230, 3509640, 4211568, 5264460, 7019280, 10528920, 21057840]

約数ペア:

[(1, 21057840), (2, 10528920), (3, 7019280), (4, 5264460), (5, 4211568), (6, 3509640), (8, 2632230), (9, 2339760), (10, 2105784), (12, 1754820), (15, 1403856), (16, 1316115), (18, 1169880), (20, 1052892), (24, 877410), (27, 779920), (30, 701928), (36, 584940), (40, 526446), (45, 467952), (48, 438705), (54, 389960), (60, 350964), (72, 292470), (80, 263223), (90, 233976), (108, 194980), (120, 175482), (135, 155984), (144, 146235), (180, 116988), (216, 97490), (240, 87741), (270, 77992), (360, 58494), (432, 48745), (540, 38996), (720, 29247), (1080, 19498), (2160, 9749)]