8244280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{457}}^1$

素因数の和:520

約数の個数: 64

約数和(自身を含む): 20774880

約数和(自身を除く): 12530600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 457, 820, 902, 914, 1640, 1804, 1828, 2255, 2285, 3608, 3656, 4510, 4570, 5027, 9020, 9140, 10054, 18040, 18280, 18737, 20108, 25135, 37474, 40216, 50270, 74948, 93685, 100540, 149896, 187370, 201080, 206107, 374740, 412214, 749480, 824428, 1030535, 1648856, 2061070, 4122140, 8244280]

約数ペア:

[(1, 8244280), (2, 4122140), (4, 2061070), (5, 1648856), (8, 1030535), (10, 824428), (11, 749480), (20, 412214), (22, 374740), (40, 206107), (41, 201080), (44, 187370), (55, 149896), (82, 100540), (88, 93685), (110, 74948), (164, 50270), (205, 40216), (220, 37474), (328, 25135), (410, 20108), (440, 18737), (451, 18280), (457, 18040), (820, 10054), (902, 9140), (914, 9020), (1640, 5027), (1804, 4570), (1828, 4510), (2255, 3656), (2285, 3608)]