21122563

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{8849}}^1$

素因数の和:8898

約数の個数: 16

約数和(自身を含む): 27187200

約数和(自身を除く): 6064637

約数列:

[1, 7, 11, 31, 77, 217, 341, 2387, 8849, 61943, 97339, 274319, 681373, 1920233, 3017509, 21122563]

約数ペア:

[(1, 21122563), (7, 3017509), (11, 1920233), (31, 681373), (77, 274319), (217, 97339), (341, 61943), (2387, 8849)]