18756938

素因数分解:

$2^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1\times {\mathrm{619}}^1$

素因数の和:869

約数の個数: 16

約数和(自身を含む): 28644000

約数和(自身を除く): 9887062

約数列:

[1, 2, 109, 139, 218, 278, 619, 1238, 15151, 30302, 67471, 86041, 134942, 172082, 9378469, 18756938]

約数ペア:

[(1, 18756938), (2, 9378469), (109, 172082), (139, 134942), (218, 86041), (278, 67471), (619, 30302), (1238, 15151)]