20402145

素因数分解:

$3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1913}}^1$

素因数の和:2006

約数の個数: 32

約数和(自身を含む): 36748800

約数和(自身を除く): 16346655

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 135, 237, 395, 711, 1185, 1913, 2133, 3555, 5739, 9565, 10665, 17217, 28695, 51651, 86085, 151127, 258255, 453381, 755635, 1360143, 2266905, 4080429, 6800715, 20402145]

約数ペア:

[(1, 20402145), (3, 6800715), (5, 4080429), (9, 2266905), (15, 1360143), (27, 755635), (45, 453381), (79, 258255), (135, 151127), (237, 86085), (395, 51651), (711, 28695), (1185, 17217), (1913, 10665), (2133, 9565), (3555, 5739)]