18638320

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{4957}}^1$

素因数の和:5017

約数の個数: 40

約数和(自身を含む): 44265024

約数和(自身を除く): 25626704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 4957, 9914, 19828, 24785, 39656, 49570, 79312, 99140, 198280, 232979, 396560, 465958, 931916, 1164895, 1863832, 2329790, 3727664, 4659580, 9319160, 18638320]

約数ペア:

[(1, 18638320), (2, 9319160), (4, 4659580), (5, 3727664), (8, 2329790), (10, 1863832), (16, 1164895), (20, 931916), (40, 465958), (47, 396560), (80, 232979), (94, 198280), (188, 99140), (235, 79312), (376, 49570), (470, 39656), (752, 24785), (940, 19828), (1880, 9914), (3760, 4957)]