20268280

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10781}}^1$

素因数の和:10839

約数の個数: 32

約数和(自身を含む): 46578240

約数和(自身を除く): 26309960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 10781, 21562, 43124, 53905, 86248, 107810, 215620, 431240, 506707, 1013414, 2026828, 2533535, 4053656, 5067070, 10134140, 20268280]

約数ペア:

[(1, 20268280), (2, 10134140), (4, 5067070), (5, 4053656), (8, 2533535), (10, 2026828), (20, 1013414), (40, 506707), (47, 431240), (94, 215620), (188, 107810), (235, 86248), (376, 53905), (470, 43124), (940, 21562), (1880, 10781)]