20847385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{4787}}^1$

素因数の和:4872

約数の個数: 16

約数和(自身を含む): 27349056

約数和(自身を除く): 6501671

約数列:

[1, 5, 13, 65, 67, 335, 871, 4355, 4787, 23935, 62231, 311155, 320729, 1603645, 4169477, 20847385]

約数ペア:

[(1, 20847385), (5, 4169477), (13, 1603645), (65, 320729), (67, 311155), (335, 62231), (871, 23935), (4355, 4787)]