20784566

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1$

素因数の和:356

約数の個数: 32

約数和(自身を含む): 35278848

約数和(自身を除く): 14494282

約数列:

[1, 2, 11, 22, 43, 86, 127, 173, 254, 346, 473, 946, 1397, 1903, 2794, 3806, 5461, 7439, 10922, 14878, 21971, 43942, 60071, 81829, 120142, 163658, 241681, 483362, 944753, 1889506, 10392283, 20784566]

約数ペア:

[(1, 20784566), (2, 10392283), (11, 1889506), (22, 944753), (43, 483362), (86, 241681), (127, 163658), (173, 120142), (254, 81829), (346, 60071), (473, 43942), (946, 21971), (1397, 14878), (1903, 10922), (2794, 7439), (3806, 5461)]