156568321

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{55501}}^1$

素因数の和:55552

約数の個数: 16

約数和(自身を含む): 198919168

約数和(自身を除く): 42350847

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 55501, 388507, 721513, 1720531, 5050591, 12043717, 22366903, 156568321]

約数ペア:

[(1, 156568321), (7, 22366903), (13, 12043717), (31, 5050591), (91, 1720531), (217, 721513), (403, 388507), (2821, 55501)]