18920252

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{1259}}^1$

素因数の和:1310

約数の個数: 36

約数和(自身を含む): 37908360

約数和(自身を除く): 18988108

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 221, 289, 442, 578, 884, 1156, 1259, 2518, 3757, 5036, 7514, 15028, 16367, 21403, 32734, 42806, 65468, 85612, 278239, 363851, 556478, 727702, 1112956, 1455404, 4730063, 9460126, 18920252]

約数ペア:

[(1, 18920252), (2, 9460126), (4, 4730063), (13, 1455404), (17, 1112956), (26, 727702), (34, 556478), (52, 363851), (68, 278239), (221, 85612), (289, 65468), (442, 42806), (578, 32734), (884, 21403), (1156, 16367), (1259, 15028), (2518, 7514), (3757, 5036)]