21000808

素因数分解:

$2^3\times {\mathrm{997}}^1\times {\mathrm{2633}}^1$

素因数の和:3636

約数の個数: 16

約数和(自身を含む): 39430980

約数和(自身を除く): 18430172

約数列:

[1, 2, 4, 8, 997, 1994, 2633, 3988, 5266, 7976, 10532, 21064, 2625101, 5250202, 10500404, 21000808]

約数ペア:

[(1, 21000808), (2, 10500404), (4, 5250202), (8, 2625101), (997, 21064), (1994, 10532), (2633, 7976), (3988, 5266)]