1664880

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{991}}^1$

素因数の和:1014

約数の個数: 80

約数和(自身を含む): 5904384

約数和(自身を除く): 4239504

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 991, 1680, 1982, 2973, 3964, 4955, 5946, 6937, 7928, 9910, 11892, 13874, 14865, 15856, 19820, 20811, 23784, 27748, 29730, 34685, 39640, 41622, 47568, 55496, 59460, 69370, 79280, 83244, 104055, 110992, 118920, 138740, 166488, 208110, 237840, 277480, 332976, 416220, 554960, 832440, 1664880]

約数ペア:

[(1, 1664880), (2, 832440), (3, 554960), (4, 416220), (5, 332976), (6, 277480), (7, 237840), (8, 208110), (10, 166488), (12, 138740), (14, 118920), (15, 110992), (16, 104055), (20, 83244), (21, 79280), (24, 69370), (28, 59460), (30, 55496), (35, 47568), (40, 41622), (42, 39640), (48, 34685), (56, 29730), (60, 27748), (70, 23784), (80, 20811), (84, 19820), (105, 15856), (112, 14865), (120, 13874), (140, 11892), (168, 9910), (210, 7928), (240, 6937), (280, 5946), (336, 4955), (420, 3964), (560, 2973), (840, 1982), (991, 1680)]