20861391

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{463}}^1\times {\mathrm{653}}^1$

素因数の和:1142

約数の個数: 16

約数和(自身を含む): 29131776

約数和(自身を除く): 8270385

約数列:

[1, 3, 23, 69, 463, 653, 1389, 1959, 10649, 15019, 31947, 45057, 302339, 907017, 6953797, 20861391]

約数ペア:

[(1, 20861391), (3, 6953797), (23, 907017), (69, 302339), (463, 45057), (653, 31947), (1389, 15019), (1959, 10649)]