21007883

素因数分解:

${\mathrm{13}}^2\times {\mathrm{197}}^1\times {\mathrm{631}}^1$

素因数の和:854

約数の個数: 12

約数和(自身を含む): 22899888

約数和(自身を除く): 1892005

約数列:

[1, 13, 169, 197, 631, 2561, 8203, 33293, 106639, 124307, 1615991, 21007883]

約数ペア:

[(1, 21007883), (13, 1615991), (169, 124307), (197, 106639), (631, 33293), (2561, 8203)]