21364856

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{19213}}^1$

素因数の和:19358

約数の個数: 16

約数和(自身を含む): 40349400

約数和(自身を除く): 18984544

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 19213, 38426, 76852, 153704, 2670607, 5341214, 10682428, 21364856]

約数ペア:

[(1, 21364856), (2, 10682428), (4, 5341214), (8, 2670607), (139, 153704), (278, 76852), (556, 38426), (1112, 19213)]