19801314845

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{3856147}}^1$

素因数の和:3856244

約数の個数: 16

約数和(自身を含む): 25913314560

約数和(自身を除く): 6111999715

約数列:

[1, 5, 13, 65, 79, 395, 1027, 5135, 3856147, 19280735, 50129911, 250649555, 304635613, 1523178065, 3960262969, 19801314845]

約数ペア:

[(1, 19801314845), (5, 3960262969), (13, 1523178065), (65, 304635613), (79, 250649555), (395, 50129911), (1027, 19280735), (5135, 3856147)]