21132016648

素因数分解:

$2^3\times {\mathrm{661}}^1\times {\mathrm{3996221}}^1$

素因数の和:3996888

約数の個数: 16

約数和(自身を含む): 39682484460

約数和(自身を除く): 18550467812

約数列:

[1, 2, 4, 8, 661, 1322, 2644, 5288, 3996221, 7992442, 15984884, 31969768, 2641502081, 5283004162, 10566008324, 21132016648]

約数ペア:

[(1, 21132016648), (2, 10566008324), (4, 5283004162), (8, 2641502081), (661, 31969768), (1322, 15984884), (2644, 7992442), (5288, 3996221)]