19919523

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{101}}^1\times {\mathrm{389}}^1$

素因数の和:519

約数の個数: 24

約数和(自身を含む): 29118960

約数和(自身を除く): 9199437

約数列:

[1, 3, 13, 39, 101, 169, 303, 389, 507, 1167, 1313, 3939, 5057, 15171, 17069, 39289, 51207, 65741, 117867, 197223, 510757, 1532271, 6639841, 19919523]

約数ペア:

[(1, 19919523), (3, 6639841), (13, 1532271), (39, 510757), (101, 197223), (169, 117867), (303, 65741), (389, 51207), (507, 39289), (1167, 17069), (1313, 15171), (3939, 5057)]