20608280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{6691}}^1$

素因数の和:6720

約数の個数: 64

約数和(自身を含む): 57818880

約数和(自身を除く): 37210600

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 770, 1540, 3080, 6691, 13382, 26764, 33455, 46837, 53528, 66910, 73601, 93674, 133820, 147202, 187348, 234185, 267640, 294404, 368005, 374696, 468370, 515207, 588808, 736010, 936740, 1030414, 1472020, 1873480, 2060828, 2576035, 2944040, 4121656, 5152070, 10304140, 20608280]

約数ペア:

[(1, 20608280), (2, 10304140), (4, 5152070), (5, 4121656), (7, 2944040), (8, 2576035), (10, 2060828), (11, 1873480), (14, 1472020), (20, 1030414), (22, 936740), (28, 736010), (35, 588808), (40, 515207), (44, 468370), (55, 374696), (56, 368005), (70, 294404), (77, 267640), (88, 234185), (110, 187348), (140, 147202), (154, 133820), (220, 93674), (280, 73601), (308, 66910), (385, 53528), (440, 46837), (616, 33455), (770, 26764), (1540, 13382), (3080, 6691)]