21631519

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{12511}}^1$

素因数の和:12550

約数の個数: 16

約数和(自身を含む): 28026880

約数和(自身を除く): 6395361

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 12511, 87577, 162643, 237709, 1138501, 1663963, 3090217, 21631519]

約数ペア:

[(1, 21631519), (7, 3090217), (13, 1663963), (19, 1138501), (91, 237709), (133, 162643), (247, 87577), (1729, 12511)]