21204320

素因数分解:

$2^5\times 5^1\times {\mathrm{132527}}^1$

素因数の和:132542

約数の個数: 24

約数和(自身を含む): 50095584

約数和(自身を除く): 28891264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 132527, 265054, 530108, 662635, 1060216, 1325270, 2120432, 2650540, 4240864, 5301080, 10602160, 21204320]

約数ペア:

[(1, 21204320), (2, 10602160), (4, 5301080), (5, 4240864), (8, 2650540), (10, 2120432), (16, 1325270), (20, 1060216), (32, 662635), (40, 530108), (80, 265054), (160, 132527)]