20750416

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{499}}^1$

素因数の和:643

約数の個数: 40

約数和(自身を含む): 42408000

約数和(自身を除く): 21657584

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 113, 184, 226, 368, 452, 499, 904, 998, 1808, 1996, 2599, 3992, 5198, 7984, 10396, 11477, 20792, 22954, 41584, 45908, 56387, 91816, 112774, 183632, 225548, 451096, 902192, 1296901, 2593802, 5187604, 10375208, 20750416]

約数ペア:

[(1, 20750416), (2, 10375208), (4, 5187604), (8, 2593802), (16, 1296901), (23, 902192), (46, 451096), (92, 225548), (113, 183632), (184, 112774), (226, 91816), (368, 56387), (452, 45908), (499, 41584), (904, 22954), (998, 20792), (1808, 11477), (1996, 10396), (2599, 7984), (3992, 5198)]