21061887

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1249}}^1$

素因数の和:1343

約数の個数: 32

約数和(自身を含む): 35520000

約数和(自身を除く): 14458113

約数列:

[1, 3, 7, 11, 21, 33, 73, 77, 219, 231, 511, 803, 1249, 1533, 2409, 3747, 5621, 8743, 13739, 16863, 26229, 41217, 91177, 96173, 273531, 288519, 638239, 1002947, 1914717, 3008841, 7020629, 21061887]

約数ペア:

[(1, 21061887), (3, 7020629), (7, 3008841), (11, 1914717), (21, 1002947), (33, 638239), (73, 288519), (77, 273531), (219, 96173), (231, 91177), (511, 41217), (803, 26229), (1249, 16863), (1533, 13739), (2409, 8743), (3747, 5621)]