21579272

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1451}}^1$

素因数の和:1494

約数の個数: 48

約数和(自身を含む): 47828880

約数和(自身を除く): 26249608

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 169, 286, 338, 572, 676, 1144, 1352, 1451, 1859, 2902, 3718, 5804, 7436, 11608, 14872, 15961, 18863, 31922, 37726, 63844, 75452, 127688, 150904, 207493, 245219, 414986, 490438, 829972, 980876, 1659944, 1961752, 2697409, 5394818, 10789636, 21579272]

約数ペア:

[(1, 21579272), (2, 10789636), (4, 5394818), (8, 2697409), (11, 1961752), (13, 1659944), (22, 980876), (26, 829972), (44, 490438), (52, 414986), (88, 245219), (104, 207493), (143, 150904), (169, 127688), (286, 75452), (338, 63844), (572, 37726), (676, 31922), (1144, 18863), (1352, 15961), (1451, 14872), (1859, 11608), (2902, 7436), (3718, 5804)]