20402214340

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{2543917}}^1$

素因数の和:2544327

約数の個数: 24

約数和(自身を含む): 42951511512

約数和(自身を除く): 22549297172

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 2543917, 5087834, 10175668, 12719585, 25439170, 50878340, 1020110717, 2040221434, 4080442868, 5100553585, 10201107170, 20402214340]

約数ペア:

[(1, 20402214340), (2, 10201107170), (4, 5100553585), (5, 4080442868), (10, 2040221434), (20, 1020110717), (401, 50878340), (802, 25439170), (1604, 12719585), (2005, 10175668), (4010, 5087834), (8020, 2543917)]