21107427

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{293}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 11067933

約数列:

[1, 3, 11, 33, 37, 59, 111, 177, 293, 407, 649, 879, 1221, 1947, 2183, 3223, 6549, 9669, 10841, 17287, 24013, 32523, 51861, 72039, 119251, 190157, 357753, 570471, 639619, 1918857, 7035809, 21107427]

約数ペア:

[(1, 21107427), (3, 7035809), (11, 1918857), (33, 639619), (37, 570471), (59, 357753), (111, 190157), (177, 119251), (293, 72039), (407, 51861), (649, 32523), (879, 24013), (1221, 17287), (1947, 10841), (2183, 9669), (3223, 6549)]