28989723

素因数分解:

$3^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{991}}^1$

素因数の和:1207

約数の個数: 24

約数和(自身を含む): 45235200

約数和(自身を除く): 16245477

約数列:

[1, 3, 7, 21, 49, 147, 199, 597, 991, 1393, 2973, 4179, 6937, 9751, 20811, 29253, 48559, 145677, 197209, 591627, 1380463, 4141389, 9663241, 28989723]

約数ペア:

[(1, 28989723), (3, 9663241), (7, 4141389), (21, 1380463), (49, 591627), (147, 197209), (199, 145677), (597, 48559), (991, 29253), (1393, 20811), (2973, 9751), (4179, 6937)]