81668741

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{547}}^1$

素因数の和:849

約数の個数: 24

約数和(自身を含む): 104203296

約数和(自身を除く): 22534555

約数列:

[1, 7, 11, 49, 77, 277, 539, 547, 1939, 3047, 3829, 6017, 13573, 21329, 26803, 42119, 149303, 151519, 294833, 1060633, 1666709, 7424431, 11666963, 81668741]

約数ペア:

[(1, 81668741), (7, 11666963), (11, 7424431), (49, 1666709), (77, 1060633), (277, 294833), (539, 151519), (547, 149303), (1939, 42119), (3047, 26803), (3829, 21329), (6017, 13573)]