18388280

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{9781}}^1$

素因数の和:9839

約数の個数: 32

約数和(自身を含む): 42258240

約数和(自身を除く): 23869960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 9781, 19562, 39124, 48905, 78248, 97810, 195620, 391240, 459707, 919414, 1838828, 2298535, 3677656, 4597070, 9194140, 18388280]

約数ペア:

[(1, 18388280), (2, 9194140), (4, 4597070), (5, 3677656), (8, 2298535), (10, 1838828), (20, 919414), (40, 459707), (47, 391240), (94, 195620), (188, 97810), (235, 78248), (376, 48905), (470, 39124), (940, 19562), (1880, 9781)]