21782456

素因数分解:

$2^3\times {\mathrm{997}}^1\times {\mathrm{2731}}^1$

素因数の和:3734

約数の個数: 16

約数和(自身を含む): 40898040

約数和(自身を除く): 19115584

約数列:

[1, 2, 4, 8, 997, 1994, 2731, 3988, 5462, 7976, 10924, 21848, 2722807, 5445614, 10891228, 21782456]

約数ペア:

[(1, 21782456), (2, 10891228), (4, 5445614), (8, 2722807), (997, 21848), (1994, 10924), (2731, 7976), (3988, 5462)]