21799921

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{971}}^1$

素因数の和:1152

約数の個数: 16

約数和(自身を含む): 25800768

約数和(自身を除く): 4000847

約数列:

[1, 11, 13, 143, 157, 971, 1727, 2041, 10681, 12623, 22451, 138853, 152447, 1676917, 1981811, 21799921]

約数ペア:

[(1, 21799921), (11, 1981811), (13, 1676917), (143, 152447), (157, 138853), (971, 22451), (1727, 12623), (2041, 10681)]