21950551

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{487}}^1$

素因数の和:678

約数の個数: 16

約数和(自身を含む): 25860096

約数和(自身を除く): 3909545

約数列:

[1, 7, 47, 137, 329, 487, 959, 3409, 6439, 22889, 45073, 66719, 160223, 467033, 3135793, 21950551]

約数ペア:

[(1, 21950551), (7, 3135793), (47, 467033), (137, 160223), (329, 66719), (487, 45073), (959, 22889), (3409, 6439)]