128641492

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{64709}}^1$

素因数の和:64791

約数の個数: 24

約数和(自身を含む): 260910720

約数和(自身を除く): 132269228

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 64709, 129418, 258836, 452963, 905926, 1811852, 4594339, 9188678, 18377356, 32160373, 64320746, 128641492]

約数ペア:

[(1, 128641492), (2, 64320746), (4, 32160373), (7, 18377356), (14, 9188678), (28, 4594339), (71, 1811852), (142, 905926), (284, 452963), (497, 258836), (994, 129418), (1988, 64709)]