20941778

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1979}}^1$

素因数の和:2042

約数の個数: 32

約数和(自身を含む): 37920960

約数和(自身を除く): 16979182

約数列:

[1, 2, 11, 13, 22, 26, 37, 74, 143, 286, 407, 481, 814, 962, 1979, 3958, 5291, 10582, 21769, 25727, 43538, 51454, 73223, 146446, 282997, 565994, 805453, 951899, 1610906, 1903798, 10470889, 20941778]

約数ペア:

[(1, 20941778), (2, 10470889), (11, 1903798), (13, 1610906), (22, 951899), (26, 805453), (37, 565994), (74, 282997), (143, 146446), (286, 73223), (407, 51454), (481, 43538), (814, 25727), (962, 21769), (1979, 10582), (3958, 5291)]