18491977

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{331}}^1\times {\mathrm{347}}^1$

素因数の和:708

約数の個数: 16

約数和(自身を含む): 22182912

約数和(自身を除く): 3690935

約数列:

[1, 7, 23, 161, 331, 347, 2317, 2429, 7613, 7981, 53291, 55867, 114857, 803999, 2641711, 18491977]

約数ペア:

[(1, 18491977), (7, 2641711), (23, 803999), (161, 114857), (331, 55867), (347, 53291), (2317, 7981), (2429, 7613)]