28771821

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{81971}}^1$

素因数の和:81993

約数の個数: 16

約数和(自身を含む): 45904320

約数和(自身を除く): 17132499

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 81971, 245913, 737739, 1065623, 2213217, 3196869, 9590607, 28771821]

約数ペア:

[(1, 28771821), (3, 9590607), (9, 3196869), (13, 2213217), (27, 1065623), (39, 737739), (117, 245913), (351, 81971)]