20581816

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{23603}}^1$

素因数の和:23718

約数の個数: 16

約数和(自身を含む): 38946600

約数和(自身を除く): 18364784

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 23603, 47206, 94412, 188824, 2572727, 5145454, 10290908, 20581816]

約数ペア:

[(1, 20581816), (2, 10290908), (4, 5145454), (8, 2572727), (109, 188824), (218, 94412), (436, 47206), (872, 23603)]