20406392

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{661}}^1$

素因数の和:911

約数の個数: 32

約数和(自身を含む): 40752720

約数和(自身を除く): 20346328

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 227, 454, 661, 908, 1322, 1816, 2644, 3859, 5288, 7718, 11237, 15436, 22474, 30872, 44948, 89896, 150047, 300094, 600188, 1200376, 2550799, 5101598, 10203196, 20406392]

約数ペア:

[(1, 20406392), (2, 10203196), (4, 5101598), (8, 2550799), (17, 1200376), (34, 600188), (68, 300094), (136, 150047), (227, 89896), (454, 44948), (661, 30872), (908, 22474), (1322, 15436), (1816, 11237), (2644, 7718), (3859, 5288)]