646428808

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{20939}}^1$

素因数の和:21189

約数の個数: 32

約数和(自身を含む): 1289066400

約数和(自身を除く): 642637592

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 227, 454, 908, 1816, 3859, 7718, 15436, 20939, 30872, 41878, 83756, 167512, 355963, 711926, 1423852, 2847704, 4753153, 9506306, 19012612, 38025224, 80803601, 161607202, 323214404, 646428808]

約数ペア:

[(1, 646428808), (2, 323214404), (4, 161607202), (8, 80803601), (17, 38025224), (34, 19012612), (68, 9506306), (136, 4753153), (227, 2847704), (454, 1423852), (908, 711926), (1816, 355963), (3859, 167512), (7718, 83756), (15436, 41878), (20939, 30872)]