20804020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{35869}}^1$

素因数の和:35907

約数の個数: 24

約数和(自身を含む): 45196200

約数和(自身を除く): 24392180

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 35869, 71738, 143476, 179345, 358690, 717380, 1040201, 2080402, 4160804, 5201005, 10402010, 20804020]

約数ペア:

[(1, 20804020), (2, 10402010), (4, 5201005), (5, 4160804), (10, 2080402), (20, 1040201), (29, 717380), (58, 358690), (116, 179345), (145, 143476), (290, 71738), (580, 35869)]