19404791

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{401}}^1$

素因数の和:662

約数の個数: 16

約数和(自身を含む): 23052288

約数和(自身を除く): 3647497

約数列:

[1, 7, 31, 217, 223, 401, 1561, 2807, 6913, 12431, 48391, 87017, 89423, 625961, 2772113, 19404791]

約数ペア:

[(1, 19404791), (7, 2772113), (31, 625961), (217, 89423), (223, 87017), (401, 48391), (1561, 12431), (2807, 6913)]