20888560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3391}}^1$

素因数の和:3422

約数の個数: 80

約数和(自身を含む): 60567552

約数和(自身を除く): 39678992

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 140, 154, 176, 220, 280, 308, 385, 440, 560, 616, 770, 880, 1232, 1540, 3080, 3391, 6160, 6782, 13564, 16955, 23737, 27128, 33910, 37301, 47474, 54256, 67820, 74602, 94948, 118685, 135640, 149204, 186505, 189896, 237370, 261107, 271280, 298408, 373010, 379792, 474740, 522214, 596816, 746020, 949480, 1044428, 1305535, 1492040, 1898960, 2088856, 2611070, 2984080, 4177712, 5222140, 10444280, 20888560]

約数ペア:

[(1, 20888560), (2, 10444280), (4, 5222140), (5, 4177712), (7, 2984080), (8, 2611070), (10, 2088856), (11, 1898960), (14, 1492040), (16, 1305535), (20, 1044428), (22, 949480), (28, 746020), (35, 596816), (40, 522214), (44, 474740), (55, 379792), (56, 373010), (70, 298408), (77, 271280), (80, 261107), (88, 237370), (110, 189896), (112, 186505), (140, 149204), (154, 135640), (176, 118685), (220, 94948), (280, 74602), (308, 67820), (385, 54256), (440, 47474), (560, 37301), (616, 33910), (770, 27128), (880, 23737), (1232, 16955), (1540, 13564), (3080, 6782), (3391, 6160)]