21691216

素因数分解:

$2^4\times {\mathrm{467}}^1\times {\mathrm{2903}}^1$

素因数の和:3378

約数の個数: 20

約数和(自身を含む): 42131232

約数和(自身を除く): 20440016

約数列:

[1, 2, 4, 8, 16, 467, 934, 1868, 2903, 3736, 5806, 7472, 11612, 23224, 46448, 1355701, 2711402, 5422804, 10845608, 21691216]

約数ペア:

[(1, 21691216), (2, 10845608), (4, 5422804), (8, 2711402), (16, 1355701), (467, 46448), (934, 23224), (1868, 11612), (2903, 7472), (3736, 5806)]