21087968

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{431}}^1$

素因数の和:591

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 24634912

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 139, 176, 278, 352, 431, 556, 862, 1112, 1529, 1724, 2224, 3058, 3448, 4448, 4741, 6116, 6896, 9482, 12232, 13792, 18964, 24464, 37928, 48928, 59909, 75856, 119818, 151712, 239636, 479272, 658999, 958544, 1317998, 1917088, 2635996, 5271992, 10543984, 21087968]

約数ペア:

[(1, 21087968), (2, 10543984), (4, 5271992), (8, 2635996), (11, 1917088), (16, 1317998), (22, 958544), (32, 658999), (44, 479272), (88, 239636), (139, 151712), (176, 119818), (278, 75856), (352, 59909), (431, 48928), (556, 37928), (862, 24464), (1112, 18964), (1529, 13792), (1724, 12232), (2224, 9482), (3058, 6896), (3448, 6116), (4448, 4741)]