21031478

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{11393}}^1$

素因数の和:11479

約数の個数: 16

約数和(自身を含む): 34455456

約数和(自身を除く): 13423978

約数列:

[1, 2, 13, 26, 71, 142, 923, 1846, 11393, 22786, 148109, 296218, 808903, 1617806, 10515739, 21031478]

約数ペア:

[(1, 21031478), (2, 10515739), (13, 1617806), (26, 808903), (71, 296218), (142, 148109), (923, 22786), (1846, 11393)]