19811498

素因数分解:

$2^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{21121}}^1$

素因数の和:21197

約数の個数: 16

約数和(自身を含む): 34471104

約数和(自身を除く): 14659606

約数列:

[1, 2, 7, 14, 67, 134, 469, 938, 21121, 42242, 147847, 295694, 1415107, 2830214, 9905749, 19811498]

約数ペア:

[(1, 19811498), (2, 9905749), (7, 2830214), (14, 1415107), (67, 295694), (134, 147847), (469, 42242), (938, 21121)]