21187419

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{6619}}^1$

素因数の和:6730

約数の個数: 16

約数和(自身を含む): 31140480

約数和(自身を除く): 9953061

約数列:

[1, 3, 11, 33, 97, 291, 1067, 3201, 6619, 19857, 72809, 218427, 642043, 1926129, 7062473, 21187419]

約数ペア:

[(1, 21187419), (3, 7062473), (11, 1926129), (33, 642043), (97, 218427), (291, 72809), (1067, 19857), (3201, 6619)]