20808819

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{4507}}^1$

素因数の和:4541

約数の個数: 24

約数和(自身を含む): 32818240

約数和(自身を除く): 12009421

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 1539, 4507, 4617, 13521, 40563, 85633, 121689, 256899, 365067, 770697, 1095201, 2312091, 6936273, 20808819]

約数ペア:

[(1, 20808819), (3, 6936273), (9, 2312091), (19, 1095201), (27, 770697), (57, 365067), (81, 256899), (171, 121689), (243, 85633), (513, 40563), (1539, 13521), (4507, 4617)]