20205988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{5813}}^1$

素因数の和:5907

約数の個数: 24

約数和(自身を含む): 39070080

約数和(自身を除く): 18864092

約数列:

[1, 2, 4, 11, 22, 44, 79, 158, 316, 869, 1738, 3476, 5813, 11626, 23252, 63943, 127886, 255772, 459227, 918454, 1836908, 5051497, 10102994, 20205988]

約数ペア:

[(1, 20205988), (2, 10102994), (4, 5051497), (11, 1836908), (22, 918454), (44, 459227), (79, 255772), (158, 127886), (316, 63943), (869, 23252), (1738, 11626), (3476, 5813)]