20812520

素因数分解:

$2^3\times 5^1\times {\mathrm{520313}}^1$

素因数の和:520324

約数の個数: 16

約数和(自身を含む): 46828260

約数和(自身を除く): 26015740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520313, 1040626, 2081252, 2601565, 4162504, 5203130, 10406260, 20812520]

約数ペア:

[(1, 20812520), (2, 10406260), (4, 5203130), (5, 4162504), (8, 2601565), (10, 2081252), (20, 1040626), (40, 520313)]