19857993

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{3643}}^1$

素因数の和:3748

約数の個数: 16

約数和(自身を含む): 27985920

約数和(自身を除く): 8127927

約数列:

[1, 3, 23, 69, 79, 237, 1817, 3643, 5451, 10929, 83789, 251367, 287797, 863391, 6619331, 19857993]

約数ペア:

[(1, 19857993), (3, 6619331), (23, 863391), (69, 287797), (79, 251367), (237, 83789), (1817, 10929), (3643, 5451)]