20644912

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{16333}}^1$

素因数の和:16420

約数の個数: 20

約数和(自身を含む): 40508320

約数和(自身を除く): 19863408

約数列:

[1, 2, 4, 8, 16, 79, 158, 316, 632, 1264, 16333, 32666, 65332, 130664, 261328, 1290307, 2580614, 5161228, 10322456, 20644912]

約数ペア:

[(1, 20644912), (2, 10322456), (4, 5161228), (8, 2580614), (16, 1290307), (79, 261328), (158, 130664), (316, 65332), (632, 32666), (1264, 16333)]