21263543

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{1723}}^1$

素因数の和:1814

約数の個数: 16

約数和(自身を含む): 25487616

約数和(自身を除く): 4224073

約数列:

[1, 7, 41, 43, 287, 301, 1723, 1763, 12061, 12341, 70643, 74089, 494501, 518623, 3037649, 21263543]

約数ペア:

[(1, 21263543), (7, 3037649), (41, 518623), (43, 494501), (287, 74089), (301, 70643), (1723, 12341), (1763, 12061)]