18826775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{307}}^1$

素因数の和:551

約数の個数: 24

約数和(自身を含む): 25665024

約数和(自身を除く): 6838249

約数列:

[1, 5, 11, 25, 55, 223, 275, 307, 1115, 1535, 2453, 3377, 5575, 7675, 12265, 16885, 61325, 68461, 84425, 342305, 753071, 1711525, 3765355, 18826775]

約数ペア:

[(1, 18826775), (5, 3765355), (11, 1711525), (25, 753071), (55, 342305), (223, 84425), (275, 68461), (307, 61325), (1115, 16885), (1535, 12265), (2453, 7675), (3377, 5575)]