21087544

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{1039}}^1$

素因数の和:1147

約数の個数: 32

約数和(自身を含む): 41184000

約数和(自身を除く): 20096456

約数列:

[1, 2, 4, 8, 43, 59, 86, 118, 172, 236, 344, 472, 1039, 2078, 2537, 4156, 5074, 8312, 10148, 20296, 44677, 61301, 89354, 122602, 178708, 245204, 357416, 490408, 2635943, 5271886, 10543772, 21087544]

約数ペア:

[(1, 21087544), (2, 10543772), (4, 5271886), (8, 2635943), (43, 490408), (59, 357416), (86, 245204), (118, 178708), (172, 122602), (236, 89354), (344, 61301), (472, 44677), (1039, 20296), (2078, 10148), (2537, 8312), (4156, 5074)]