21181384

素因数分解:

$2^3\times 7^1\times {\mathrm{378239}}^1$

素因数の和:378252

約数の個数: 16

約数和(自身を含む): 45388800

約数和(自身を除く): 24207416

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 378239, 756478, 1512956, 2647673, 3025912, 5295346, 10590692, 21181384]

約数ペア:

[(1, 21181384), (2, 10590692), (4, 5295346), (7, 3025912), (8, 2647673), (14, 1512956), (28, 756478), (56, 378239)]