81289336

素因数分解:

$2^3\times {\mathrm{509}}^1\times {\mathrm{19963}}^1$

素因数の和:20478

約数の個数: 16

約数和(自身を含む): 152724600

約数和(自身を除く): 71435264

約数列:

[1, 2, 4, 8, 509, 1018, 2036, 4072, 19963, 39926, 79852, 159704, 10161167, 20322334, 40644668, 81289336]

約数ペア:

[(1, 81289336), (2, 40644668), (4, 20322334), (8, 10161167), (509, 159704), (1018, 79852), (2036, 39926), (4072, 19963)]