21989968

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1373}}^1$

素因数の和:1412

約数の個数: 80

約数和(自身を含む): 57246336

約数和(自身を除く): 35256368

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 112, 143, 154, 176, 182, 208, 286, 308, 364, 572, 616, 728, 1001, 1144, 1232, 1373, 1456, 2002, 2288, 2746, 4004, 5492, 8008, 9611, 10984, 15103, 16016, 17849, 19222, 21968, 30206, 35698, 38444, 60412, 71396, 76888, 105721, 120824, 124943, 142792, 153776, 196339, 211442, 241648, 249886, 285584, 392678, 422884, 499772, 785356, 845768, 999544, 1374373, 1570712, 1691536, 1999088, 2748746, 3141424, 5497492, 10994984, 21989968]

約数ペア:

[(1, 21989968), (2, 10994984), (4, 5497492), (7, 3141424), (8, 2748746), (11, 1999088), (13, 1691536), (14, 1570712), (16, 1374373), (22, 999544), (26, 845768), (28, 785356), (44, 499772), (52, 422884), (56, 392678), (77, 285584), (88, 249886), (91, 241648), (104, 211442), (112, 196339), (143, 153776), (154, 142792), (176, 124943), (182, 120824), (208, 105721), (286, 76888), (308, 71396), (364, 60412), (572, 38444), (616, 35698), (728, 30206), (1001, 21968), (1144, 19222), (1232, 17849), (1373, 16016), (1456, 15103), (2002, 10984), (2288, 9611), (2746, 8008), (4004, 5492)]