21175216

素因数分解:

$2^4\times {\mathrm{67}}^1\times {\mathrm{19753}}^1$

素因数の和:19828

約数の個数: 20

約数和(自身を含む): 41641432

約数和(自身を除く): 20466216

約数列:

[1, 2, 4, 8, 16, 67, 134, 268, 536, 1072, 19753, 39506, 79012, 158024, 316048, 1323451, 2646902, 5293804, 10587608, 21175216]

約数ペア:

[(1, 21175216), (2, 10587608), (4, 5293804), (8, 2646902), (16, 1323451), (67, 316048), (134, 158024), (268, 79012), (536, 39506), (1072, 19753)]