21235887

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{167}}^1\times {\mathrm{199}}^1$

素因数の和:443

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 10213713

約数列:

[1, 3, 9, 71, 167, 199, 213, 501, 597, 639, 1503, 1791, 11857, 14129, 33233, 35571, 42387, 99699, 106713, 127161, 299097, 2359543, 7078629, 21235887]

約数ペア:

[(1, 21235887), (3, 7078629), (9, 2359543), (71, 299097), (167, 127161), (199, 106713), (213, 99699), (501, 42387), (597, 35571), (639, 33233), (1503, 14129), (1791, 11857)]