20508717185

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1531}}^1\times {\mathrm{3083}}^1$

素因数の和:4709

約数の個数: 32

約数和(自身を含む): 27214202880

約数和(自身を除く): 6705485695

約数列:

[1, 5, 11, 55, 79, 395, 869, 1531, 3083, 4345, 7655, 15415, 16841, 33913, 84205, 120949, 169565, 243557, 604745, 1217785, 1330439, 2679127, 4720073, 6652195, 13395635, 23600365, 51920803, 259604015, 372885767, 1864428835, 4101743437, 20508717185]

約数ペア:

[(1, 20508717185), (5, 4101743437), (11, 1864428835), (55, 372885767), (79, 259604015), (395, 51920803), (869, 23600365), (1531, 13395635), (3083, 6652195), (4345, 4720073), (7655, 2679127), (15415, 1330439), (16841, 1217785), (33913, 604745), (84205, 243557), (120949, 169565)]