18978568

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17837}}^1$

素因数の和:17869

約数の個数: 32

約数和(自身を含む): 42811200

約数和(自身を除く): 23832632

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 17837, 35674, 71348, 124859, 142696, 249718, 338903, 499436, 677806, 998872, 1355612, 2372321, 2711224, 4744642, 9489284, 18978568]

約数ペア:

[(1, 18978568), (2, 9489284), (4, 4744642), (7, 2711224), (8, 2372321), (14, 1355612), (19, 998872), (28, 677806), (38, 499436), (56, 338903), (76, 249718), (133, 142696), (152, 124859), (266, 71348), (532, 35674), (1064, 17837)]