21965336

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{19753}}^1$

素因数の和:19898

約数の個数: 16

約数和(自身を含む): 41483400

約数和(自身を除く): 19518064

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 19753, 39506, 79012, 158024, 2745667, 5491334, 10982668, 21965336]

約数ペア:

[(1, 21965336), (2, 10982668), (4, 5491334), (8, 2745667), (139, 158024), (278, 79012), (556, 39506), (1112, 19753)]