21488545

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{1063}}^1$

素因数の和:1392

約数の個数: 16

約数和(自身を含む): 27885312

約数和(自身を除く): 6396767

約数列:

[1, 5, 13, 65, 311, 1063, 1555, 4043, 5315, 13819, 20215, 69095, 330593, 1652965, 4297709, 21488545]

約数ペア:

[(1, 21488545), (5, 4297709), (13, 1652965), (65, 330593), (311, 69095), (1063, 20215), (1555, 13819), (4043, 5315)]