21821968

素因数分解:

$2^4\times 7^1\times {\mathrm{194839}}^1$

素因数の和:194854

約数の個数: 20

約数和(自身を含む): 48320320

約数和(自身を除く): 26498352

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 194839, 389678, 779356, 1363873, 1558712, 2727746, 3117424, 5455492, 10910984, 21821968]

約数ペア:

[(1, 21821968), (2, 10910984), (4, 5455492), (7, 3117424), (8, 2727746), (14, 1558712), (16, 1363873), (28, 779356), (56, 389678), (112, 194839)]