19493719

素因数分解:

$7^4\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:404

約数の個数: 20

約数和(自身を含む): 23797296

約数和(自身を除く): 4303577

約数列:

[1, 7, 23, 49, 161, 343, 353, 1127, 2401, 2471, 7889, 8119, 17297, 55223, 56833, 121079, 397831, 847553, 2784817, 19493719]

約数ペア:

[(1, 19493719), (7, 2784817), (23, 847553), (49, 397831), (161, 121079), (343, 56833), (353, 55223), (1127, 17297), (2401, 8119), (2471, 7889)]