19911194

素因数分解:

$2^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{1069}}^1$

素因数の和:1277

約数の個数: 16

約数和(自身を含む): 30559200

約数和(自身を除く): 10648006

約数列:

[1, 2, 67, 134, 139, 278, 1069, 2138, 9313, 18626, 71623, 143246, 148591, 297182, 9955597, 19911194]

約数ペア:

[(1, 19911194), (2, 9955597), (67, 297182), (134, 148591), (139, 143246), (278, 71623), (1069, 18626), (2138, 9313)]