20616980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14519}}^1$

素因数の和:14599

約数の個数: 24

約数和(自身を含む): 43908480

約数和(自身を除く): 23291500

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14519, 29038, 58076, 72595, 145190, 290380, 1030849, 2061698, 4123396, 5154245, 10308490, 20616980]

約数ペア:

[(1, 20616980), (2, 10308490), (4, 5154245), (5, 4123396), (10, 2061698), (20, 1030849), (71, 290380), (142, 145190), (284, 72595), (355, 58076), (710, 29038), (1420, 14519)]