28287891

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{44269}}^1$

素因数の和:44346

約数の個数: 12

約数和(自身を含む): 41436720

約数和(自身を除く): 13148829

約数列:

[1, 3, 9, 71, 213, 639, 44269, 132807, 398421, 3143099, 9429297, 28287891]

約数ペア:

[(1, 28287891), (3, 9429297), (9, 3143099), (71, 398421), (213, 132807), (639, 44269)]