21979792

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9883}}^1$

素因数の和:10030

約数の個数: 20

約数和(自身を含む): 42896560

約数和(自身を除く): 20916768

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9883, 19766, 39532, 79064, 158128, 1373737, 2747474, 5494948, 10989896, 21979792]

約数ペア:

[(1, 21979792), (2, 10989896), (4, 5494948), (8, 2747474), (16, 1373737), (139, 158128), (278, 79064), (556, 39532), (1112, 19766), (2224, 9883)]