81538672

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{71777}}^1$

素因数の和:71856

約数の個数: 20

約数和(自身を含む): 160208496

約数和(自身を除く): 78669824

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 71777, 143554, 287108, 574216, 1148432, 5096167, 10192334, 20384668, 40769336, 81538672]

約数ペア:

[(1, 81538672), (2, 40769336), (4, 20384668), (8, 10192334), (16, 5096167), (71, 1148432), (142, 574216), (284, 287108), (568, 143554), (1136, 71777)]