21861091

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{179}}^1\times {\mathrm{239}}^1$

素因数の和:498

約数の個数: 16

約数和(自身を含む): 25574400

約数和(自身を除く): 3713309

約数列:

[1, 7, 73, 179, 239, 511, 1253, 1673, 13067, 17447, 42781, 91469, 122129, 299467, 3123013, 21861091]

約数ペア:

[(1, 21861091), (7, 3123013), (73, 299467), (179, 122129), (239, 91469), (511, 42781), (1253, 17447), (1673, 13067)]