21939445

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{6761}}^1$

素因数の和:6836

約数の個数: 16

約数和(自身を含む): 29211840

約数和(自身を除く): 7272395

約数列:

[1, 5, 11, 55, 59, 295, 649, 3245, 6761, 33805, 74371, 371855, 398899, 1994495, 4387889, 21939445]

約数ペア:

[(1, 21939445), (5, 4387889), (11, 1994495), (55, 398899), (59, 371855), (295, 74371), (649, 33805), (3245, 6761)]