21506407

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{487}}^1$

素因数の和:622

約数の個数: 16

約数和(自身を含む): 24048640

約数和(自身を除く): 2542233

約数列:

[1, 13, 43, 79, 487, 559, 1027, 3397, 6331, 20941, 38473, 44161, 272233, 500149, 1654339, 21506407]

約数ペア:

[(1, 21506407), (13, 1654339), (43, 500149), (79, 272233), (487, 44161), (559, 38473), (1027, 20941), (3397, 6331)]