21801556

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{25117}}^1$

素因数の和:25159

約数の個数: 24

約数和(自身を含む): 45011456

約数和(自身を除く): 23209900

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 25117, 50234, 100468, 175819, 351638, 703276, 778627, 1557254, 3114508, 5450389, 10900778, 21801556]

約数ペア:

[(1, 21801556), (2, 10900778), (4, 5450389), (7, 3114508), (14, 1557254), (28, 778627), (31, 703276), (62, 351638), (124, 175819), (217, 100468), (434, 50234), (868, 25117)]