20707197

素因数分解:

$3^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{1427}}^1$

素因数の和:2128

約数の個数: 16

約数和(自身を含む): 31621632

約数和(自身を除く): 10914435

約数列:

[1, 3, 7, 21, 691, 1427, 2073, 4281, 4837, 9989, 14511, 29967, 986057, 2958171, 6902399, 20707197]

約数ペア:

[(1, 20707197), (3, 6902399), (7, 2958171), (21, 986057), (691, 29967), (1427, 14511), (2073, 9989), (4281, 4837)]