21996247

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{4933}}^1$

素因数の和:4967

約数の個数: 16

約数和(自身を含む): 27630400

約数和(自身を除く): 5634153

約数列:

[1, 7, 13, 49, 91, 343, 637, 4459, 4933, 34531, 64129, 241717, 448903, 1692019, 3142321, 21996247]

約数ペア:

[(1, 21996247), (7, 3142321), (13, 1692019), (49, 448903), (91, 241717), (343, 64129), (637, 34531), (4459, 4933)]