21123778

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{11443}}^1$

素因数の和:11529

約数の個数: 16

約数和(自身を含む): 34606656

約数和(自身を除く): 13482878

約数列:

[1, 2, 13, 26, 71, 142, 923, 1846, 11443, 22886, 148759, 297518, 812453, 1624906, 10561889, 21123778]

約数ペア:

[(1, 21123778), (2, 10561889), (13, 1624906), (26, 812453), (71, 297518), (142, 148759), (923, 22886), (1846, 11443)]