28271385

素因数分解:

$3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2503}}^1$

素因数の和:2765

約数の個数: 24

約数和(自身を含む): 49218624

約数和(自身を除く): 20947239

約数列:

[1, 3, 5, 9, 15, 45, 251, 753, 1255, 2259, 2503, 3765, 7509, 11295, 12515, 22527, 37545, 112635, 628253, 1884759, 3141265, 5654277, 9423795, 28271385]

約数ペア:

[(1, 28271385), (3, 9423795), (5, 5654277), (9, 3141265), (15, 1884759), (45, 628253), (251, 112635), (753, 37545), (1255, 22527), (2259, 12515), (2503, 11295), (3765, 7509)]