21637168

素因数分解:

$2^4\times 7^1\times {\mathrm{193189}}^1$

素因数の和:193204

約数の個数: 20

約数和(自身を含む): 47911120

約数和(自身を除く): 26273952

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 193189, 386378, 772756, 1352323, 1545512, 2704646, 3091024, 5409292, 10818584, 21637168]

約数ペア:

[(1, 21637168), (2, 10818584), (4, 5409292), (7, 3091024), (8, 2704646), (14, 1545512), (16, 1352323), (28, 772756), (56, 386378), (112, 193189)]