20720343

素因数分解:

$3^1\times 7^1\times {\mathrm{653}}^1\times {\mathrm{1511}}^1$

素因数の和:2174

約数の個数: 16

約数和(自身を含む): 31643136

約数和(自身を除く): 10922793

約数列:

[1, 3, 7, 21, 653, 1511, 1959, 4533, 4571, 10577, 13713, 31731, 986683, 2960049, 6906781, 20720343]

約数ペア:

[(1, 20720343), (3, 6906781), (7, 2960049), (21, 986683), (653, 31731), (1511, 13713), (1959, 10577), (4533, 4571)]