19689142

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{8861}}^1$

素因数の和:8975

約数の個数: 16

約数和(自身を含む): 32541264

約数和(自身を除く): 12852122

約数列:

[1, 2, 11, 22, 101, 202, 1111, 2222, 8861, 17722, 97471, 194942, 894961, 1789922, 9844571, 19689142]

約数ペア:

[(1, 19689142), (2, 9844571), (11, 1789922), (22, 894961), (101, 194942), (202, 97471), (1111, 17722), (2222, 8861)]