201628400860

素因数分解:

$2^2\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{5073689}}^1$

素因数の和:5075685

約数の個数: 24

約数和(自身を含む): 423632820240

約数和(自身を除く): 222004419380

約数列:

[1, 2, 4, 5, 10, 20, 1987, 3974, 7948, 9935, 19870, 39740, 5073689, 10147378, 20294756, 25368445, 50736890, 101473780, 10081420043, 20162840086, 40325680172, 50407100215, 100814200430, 201628400860]

約数ペア:

[(1, 201628400860), (2, 100814200430), (4, 50407100215), (5, 40325680172), (10, 20162840086), (20, 10081420043), (1987, 101473780), (3974, 50736890), (7948, 25368445), (9935, 20294756), (19870, 10147378), (39740, 5073689)]