28427920

素因数分解:

$2^4\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1321}}^1$

素因数の和:1603

約数の個数: 40

約数和(自身を含む): 66390840

約数和(自身を除く): 37962920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269, 538, 1076, 1321, 1345, 2152, 2642, 2690, 4304, 5284, 5380, 6605, 10568, 10760, 13210, 21136, 21520, 26420, 52840, 105680, 355349, 710698, 1421396, 1776745, 2842792, 3553490, 5685584, 7106980, 14213960, 28427920]

約数ペア:

[(1, 28427920), (2, 14213960), (4, 7106980), (5, 5685584), (8, 3553490), (10, 2842792), (16, 1776745), (20, 1421396), (40, 710698), (80, 355349), (269, 105680), (538, 52840), (1076, 26420), (1321, 21520), (1345, 21136), (2152, 13210), (2642, 10760), (2690, 10568), (4304, 6605), (5284, 5380)]