21335909

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{1723}}^1$

素因数の和:1820

約数の個数: 16

約数和(自身を含む): 25653120

約数和(自身を除く): 4317211

約数列:

[1, 7, 29, 61, 203, 427, 1723, 1769, 12061, 12383, 49967, 105103, 349769, 735721, 3047987, 21335909]

約数ペア:

[(1, 21335909), (7, 3047987), (29, 735721), (61, 349769), (203, 105103), (427, 49967), (1723, 12383), (1769, 12061)]