21699986

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{140909}}^1$

素因数の和:140929

約数の個数: 16

約数和(自身を含む): 40582080

約数和(自身を除く): 18882094

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 140909, 281818, 986363, 1549999, 1972726, 3099998, 10849993, 21699986]

約数ペア:

[(1, 21699986), (2, 10849993), (7, 3099998), (11, 1972726), (14, 1549999), (22, 986363), (77, 281818), (154, 140909)]