20389716

素因数分解:

$2^2\times 3^2\times {\mathrm{487}}^1\times {\mathrm{1163}}^1$

素因数の和:1660

約数の個数: 36

約数和(自身を含む): 51690912

約数和(自身を除く): 31301196

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 487, 974, 1163, 1461, 1948, 2326, 2922, 3489, 4383, 4652, 5844, 6978, 8766, 10467, 13956, 17532, 20934, 41868, 566381, 1132762, 1699143, 2265524, 3398286, 5097429, 6796572, 10194858, 20389716]

約数ペア:

[(1, 20389716), (2, 10194858), (3, 6796572), (4, 5097429), (6, 3398286), (9, 2265524), (12, 1699143), (18, 1132762), (36, 566381), (487, 41868), (974, 20934), (1163, 17532), (1461, 13956), (1948, 10467), (2326, 8766), (2922, 6978), (3489, 5844), (4383, 4652)]