21299993

素因数分解:

${\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{1231}}^1$

素因数の和:1277

約数の個数: 16

約数和(自身を含む): 25251072

約数和(自身を除く): 3951079

約数列:

[1, 11, 13, 121, 143, 1231, 1331, 1573, 13541, 16003, 17303, 148951, 176033, 1638461, 1936363, 21299993]

約数ペア:

[(1, 21299993), (11, 1936363), (13, 1638461), (121, 176033), (143, 148951), (1231, 17303), (1331, 16003), (1573, 13541)]