20909570

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{433}}^1\times {\mathrm{439}}^1$

素因数の和:890

約数の個数: 32

約数和(自身を含む): 41247360

約数和(自身を除く): 20337790

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 433, 439, 866, 878, 2165, 2195, 4330, 4390, 4763, 4829, 9526, 9658, 23815, 24145, 47630, 48290, 190087, 380174, 950435, 1900870, 2090957, 4181914, 10454785, 20909570]

約数ペア:

[(1, 20909570), (2, 10454785), (5, 4181914), (10, 2090957), (11, 1900870), (22, 950435), (55, 380174), (110, 190087), (433, 48290), (439, 47630), (866, 24145), (878, 23815), (2165, 9658), (2195, 9526), (4330, 4829), (4390, 4763)]