21004478

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{11503}}^1$

素因数の和:11599

約数の個数: 16

約数和(自身を含む): 34788096

約数和(自身を除く): 13783618

約数列:

[1, 2, 11, 22, 83, 166, 913, 1826, 11503, 23006, 126533, 253066, 954749, 1909498, 10502239, 21004478]

約数ペア:

[(1, 21004478), (2, 10502239), (11, 1909498), (22, 954749), (83, 253066), (166, 126533), (913, 23006), (1826, 11503)]