18687241

素因数分解:

${\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:408

約数の個数: 16

約数和(自身を含む): 20433600

約数和(自身を除く): 1746359

約数列:

[1, 19, 43, 89, 257, 817, 1691, 3827, 4883, 11051, 22873, 72713, 209969, 434587, 983539, 18687241]

約数ペア:

[(1, 18687241), (19, 983539), (43, 434587), (89, 209969), (257, 72713), (817, 22873), (1691, 11051), (3827, 4883)]