20509695

素因数分解:

$3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2903}}^1$

素因数の和:3071

約数の個数: 24

約数和(自身を含む): 35788896

約数和(自身を除く): 15279201

約数列:

[1, 3, 5, 9, 15, 45, 157, 471, 785, 1413, 2355, 2903, 7065, 8709, 14515, 26127, 43545, 130635, 455771, 1367313, 2278855, 4101939, 6836565, 20509695]

約数ペア:

[(1, 20509695), (3, 6836565), (5, 4101939), (9, 2278855), (15, 1367313), (45, 455771), (157, 130635), (471, 43545), (785, 26127), (1413, 14515), (2355, 8709), (2903, 7065)]