21724241

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{919}}^1$

素因数の和:1244

約数の個数: 16

約数和(自身を含む): 27202560

約数和(自身を除く): 5478319

約数列:

[1, 7, 11, 77, 307, 919, 2149, 3377, 6433, 10109, 23639, 70763, 282133, 1974931, 3103463, 21724241]

約数ペア:

[(1, 21724241), (7, 3103463), (11, 1974931), (77, 282133), (307, 70763), (919, 23639), (2149, 10109), (3377, 6433)]