19730291

素因数分解:

$7^2\times {\mathrm{31}}^2\times {\mathrm{419}}^1$

素因数の和:495

約数の個数: 18

約数和(自身を含む): 23772420

約数和(自身を除く): 4042129

約数列:

[1, 7, 31, 49, 217, 419, 961, 1519, 2933, 6727, 12989, 20531, 47089, 90923, 402659, 636461, 2818613, 19730291]

約数ペア:

[(1, 19730291), (7, 2818613), (31, 636461), (49, 402659), (217, 90923), (419, 47089), (961, 20531), (1519, 12989), (2933, 6727)]