28912689

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{19009}}^1$

素因数の和:19041

約数の個数: 18

約数和(自身を含む): 45224790

約数和(自身を除く): 16312101

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 19009, 57027, 171081, 247117, 741351, 2224053, 3212521, 9637563, 28912689]

約数ペア:

[(1, 28912689), (3, 9637563), (9, 3212521), (13, 2224053), (39, 741351), (117, 247117), (169, 171081), (507, 57027), (1521, 19009)]