21013136

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{27943}}^1$

素因数の和:27998

約数の個数: 20

約数和(自身を含む): 41580672

約数和(自身を除く): 20567536

約数列:

[1, 2, 4, 8, 16, 47, 94, 188, 376, 752, 27943, 55886, 111772, 223544, 447088, 1313321, 2626642, 5253284, 10506568, 21013136]

約数ペア:

[(1, 21013136), (2, 10506568), (4, 5253284), (8, 2626642), (16, 1313321), (47, 447088), (94, 223544), (188, 111772), (376, 55886), (752, 27943)]