20996931

素因数分解:

$3^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1\times {\mathrm{439}}^1$

素因数の和:698

約数の個数: 16

約数和(自身を含む): 28512000

約数和(自身を除く): 7515069

約数列:

[1, 3, 107, 149, 321, 439, 447, 1317, 15943, 46973, 47829, 65411, 140919, 196233, 6998977, 20996931]

約数ペア:

[(1, 20996931), (3, 6998977), (107, 196233), (149, 140919), (321, 65411), (439, 47829), (447, 46973), (1317, 15943)]