20681145

素因数分解:

$3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1831}}^1$

素因数の和:2093

約数の個数: 24

約数和(自身を含む): 36009792

約数和(自身を除く): 15328647

約数列:

[1, 3, 5, 9, 15, 45, 251, 753, 1255, 1831, 2259, 3765, 5493, 9155, 11295, 16479, 27465, 82395, 459581, 1378743, 2297905, 4136229, 6893715, 20681145]

約数ペア:

[(1, 20681145), (3, 6893715), (5, 4136229), (9, 2297905), (15, 1378743), (45, 459581), (251, 82395), (753, 27465), (1255, 16479), (1831, 11295), (2259, 9155), (3765, 5493)]