20812640

素因数分解:

$2^5\times 5^1\times {\mathrm{130079}}^1$

素因数の和:130094

約数の個数: 24

約数和(自身を含む): 49170240

約数和(自身を除く): 28357600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 130079, 260158, 520316, 650395, 1040632, 1300790, 2081264, 2601580, 4162528, 5203160, 10406320, 20812640]

約数ペア:

[(1, 20812640), (2, 10406320), (4, 5203160), (5, 4162528), (8, 2601580), (10, 2081264), (16, 1300790), (20, 1040632), (32, 650395), (40, 520316), (80, 260158), (160, 130079)]