21289192

素因数分解:

$2^3\times {\mathrm{389}}^1\times {\mathrm{6841}}^1$

素因数の和:7236

約数の個数: 16

約数和(自身を含む): 40025700

約数和(自身を除く): 18736508

約数列:

[1, 2, 4, 8, 389, 778, 1556, 3112, 6841, 13682, 27364, 54728, 2661149, 5322298, 10644596, 21289192]

約数ペア:

[(1, 21289192), (2, 10644596), (4, 5322298), (8, 2661149), (389, 54728), (778, 27364), (1556, 13682), (3112, 6841)]