28221172

素因数分解:

$2^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{2591}}^1$

素因数の和:2991

約数の個数: 24

約数和(自身を含む): 56609280

約数和(自身を除く): 28388108

約数列:

[1, 2, 4, 7, 14, 28, 389, 778, 1556, 2591, 2723, 5182, 5446, 10364, 10892, 18137, 36274, 72548, 1007899, 2015798, 4031596, 7055293, 14110586, 28221172]

約数ペア:

[(1, 28221172), (2, 14110586), (4, 7055293), (7, 4031596), (14, 2015798), (28, 1007899), (389, 72548), (778, 36274), (1556, 18137), (2591, 10892), (2723, 10364), (5182, 5446)]