28447725

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{8821}}^1$

素因数の和:8877

約数の個数: 24

約数和(自身を含む): 48132832

約数和(自身を除く): 19685107

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 8821, 26463, 44105, 132315, 220525, 379303, 661575, 1137909, 1896515, 5689545, 9482575, 28447725]

約数ペア:

[(1, 28447725), (3, 9482575), (5, 5689545), (15, 1896515), (25, 1137909), (43, 661575), (75, 379303), (129, 220525), (215, 132315), (645, 44105), (1075, 26463), (3225, 8821)]