20528060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20947}}^1$

素因数の和:20970

約数の個数: 36

約数和(自身を含む): 50149512

約数和(自身を除く): 29621452

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20947, 41894, 83788, 104735, 146629, 209470, 293258, 418940, 586516, 733145, 1026403, 1466290, 2052806, 2932580, 4105612, 5132015, 10264030, 20528060]

約数ペア:

[(1, 20528060), (2, 10264030), (4, 5132015), (5, 4105612), (7, 2932580), (10, 2052806), (14, 1466290), (20, 1026403), (28, 733145), (35, 586516), (49, 418940), (70, 293258), (98, 209470), (140, 146629), (196, 104735), (245, 83788), (490, 41894), (980, 20947)]