18781906

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3863}}^1$

素因数の和:3906

約数の個数: 32

約数和(自身を含む): 35054208

約数和(自身を除く): 16272302

約数列:

[1, 2, 11, 13, 17, 22, 26, 34, 143, 187, 221, 286, 374, 442, 2431, 3863, 4862, 7726, 42493, 50219, 65671, 84986, 100438, 131342, 552409, 722381, 853723, 1104818, 1444762, 1707446, 9390953, 18781906]

約数ペア:

[(1, 18781906), (2, 9390953), (11, 1707446), (13, 1444762), (17, 1104818), (22, 853723), (26, 722381), (34, 552409), (143, 131342), (187, 100438), (221, 84986), (286, 65671), (374, 50219), (442, 42493), (2431, 7726), (3863, 4862)]