21137636

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 20775004

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 107, 116, 131, 214, 262, 377, 428, 524, 754, 1391, 1508, 1703, 2782, 3103, 3406, 3799, 5564, 6206, 6812, 7598, 12412, 14017, 15196, 28034, 40339, 49387, 56068, 80678, 98774, 161356, 182221, 197548, 364442, 406493, 728884, 812986, 1625972, 5284409, 10568818, 21137636]

約数ペア:

[(1, 21137636), (2, 10568818), (4, 5284409), (13, 1625972), (26, 812986), (29, 728884), (52, 406493), (58, 364442), (107, 197548), (116, 182221), (131, 161356), (214, 98774), (262, 80678), (377, 56068), (428, 49387), (524, 40339), (754, 28034), (1391, 15196), (1508, 14017), (1703, 12412), (2782, 7598), (3103, 6812), (3406, 6206), (3799, 5564)]