21259496

素因数分解:

$2^3\times {\mathrm{1277}}^1\times {\mathrm{2081}}^1$

素因数の和:3364

約数の個数: 16

約数和(自身を含む): 39911940

約数和(自身を除く): 18652444

約数列:

[1, 2, 4, 8, 1277, 2081, 2554, 4162, 5108, 8324, 10216, 16648, 2657437, 5314874, 10629748, 21259496]

約数ペア:

[(1, 21259496), (2, 10629748), (4, 5314874), (8, 2657437), (1277, 16648), (2081, 10216), (2554, 8324), (4162, 5108)]