20640456

素因数分解:

$2^3\times 3^2\times {\mathrm{286673}}^1$

素因数の和:286685

約数の個数: 24

約数和(自身を含む): 55901430

約数和(自身を除く): 35260974

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 286673, 573346, 860019, 1146692, 1720038, 2293384, 2580057, 3440076, 5160114, 6880152, 10320228, 20640456]

約数ペア:

[(1, 20640456), (2, 10320228), (3, 6880152), (4, 5160114), (6, 3440076), (8, 2580057), (9, 2293384), (12, 1720038), (18, 1146692), (24, 860019), (36, 573346), (72, 286673)]