21107211

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1\times {\mathrm{607}}^1$

素因数の和:850

約数の個数: 16

約数和(自身を含む): 28775424

約数和(自身を除く): 7668213

約数列:

[1, 3, 67, 173, 201, 519, 607, 1821, 11591, 34773, 40669, 105011, 122007, 315033, 7035737, 21107211]

約数ペア:

[(1, 21107211), (3, 7035737), (67, 315033), (173, 122007), (201, 105011), (519, 40669), (607, 34773), (1821, 11591)]