21893305

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{13309}}^1$

素因数の和:13368

約数の個数: 16

約数和(自身を含む): 30666240

約数和(自身を除く): 8772935

約数列:

[1, 5, 7, 35, 47, 235, 329, 1645, 13309, 66545, 93163, 465815, 625523, 3127615, 4378661, 21893305]

約数ペア:

[(1, 21893305), (5, 4378661), (7, 3127615), (35, 625523), (47, 465815), (235, 93163), (329, 66545), (1645, 13309)]