21805553

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{503}}^1\times {\mathrm{563}}^1$

素因数の和:1084

約数の個数: 16

約数和(自身を含む): 27288576

約数和(自身を除く): 5483023

約数列:

[1, 7, 11, 77, 503, 563, 3521, 3941, 5533, 6193, 38731, 43351, 283189, 1982323, 3115079, 21805553]

約数ペア:

[(1, 21805553), (7, 3115079), (11, 1982323), (77, 283189), (503, 43351), (563, 38731), (3521, 6193), (3941, 5533)]