21166887

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{281}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 34435584

約数和(自身を除く): 13268697

約数列:

[1, 3, 7, 17, 21, 51, 119, 211, 281, 357, 633, 843, 1477, 1967, 3587, 4431, 4777, 5901, 10761, 14331, 25109, 33439, 59291, 75327, 100317, 177873, 415037, 1007947, 1245111, 3023841, 7055629, 21166887]

約数ペア:

[(1, 21166887), (3, 7055629), (7, 3023841), (17, 1245111), (21, 1007947), (51, 415037), (119, 177873), (211, 100317), (281, 75327), (357, 59291), (633, 33439), (843, 25109), (1477, 14331), (1967, 10761), (3587, 5901), (4431, 4777)]