20098870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2053}}^1$

素因数の和:2160

約数の個数: 32

約数和(自身を含む): 39929760

約数和(自身を除く): 19830890

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 178, 445, 890, 979, 1958, 2053, 4106, 4895, 9790, 10265, 20530, 22583, 45166, 112915, 182717, 225830, 365434, 913585, 1827170, 2009887, 4019774, 10049435, 20098870]

約数ペア:

[(1, 20098870), (2, 10049435), (5, 4019774), (10, 2009887), (11, 1827170), (22, 913585), (55, 365434), (89, 225830), (110, 182717), (178, 112915), (445, 45166), (890, 22583), (979, 20530), (1958, 10265), (2053, 9790), (4106, 4895)]