2040398440

素因数分解:

$2^3\times 5^1\times {\mathrm{51009961}}^1$

素因数の和:51009972

約数の個数: 16

約数和(自身を含む): 4590896580

約数和(自身を除く): 2550498140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 51009961, 102019922, 204039844, 255049805, 408079688, 510099610, 1020199220, 2040398440]

約数ペア:

[(1, 2040398440), (2, 1020199220), (4, 510099610), (5, 408079688), (8, 255049805), (10, 204039844), (20, 102019922), (40, 51009961)]