18885587

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{419}}^1$

素因数の和:610

約数の個数: 16

約数和(自身を含む): 22256640

約数和(自身を除く): 3371053

約数列:

[1, 7, 47, 137, 329, 419, 959, 2933, 6439, 19693, 45073, 57403, 137851, 401821, 2697941, 18885587]

約数ペア:

[(1, 18885587), (7, 2697941), (47, 401821), (137, 137851), (329, 57403), (419, 45073), (959, 19693), (2933, 6439)]