21937509

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3121}}^1$

素因数の和:3209

約数の個数: 24

約数和(自身を含む): 35066304

約数和(自身を除く): 13128795

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 3121, 7029, 9363, 28089, 34331, 102993, 221591, 308979, 664773, 1994319, 2437501, 7312503, 21937509]

約数ペア:

[(1, 21937509), (3, 7312503), (9, 2437501), (11, 1994319), (33, 664773), (71, 308979), (99, 221591), (213, 102993), (639, 34331), (781, 28089), (2343, 9363), (3121, 7029)]