40405100

素因数分解:

$2^2\times 5^2\times {\mathrm{404051}}^1$

素因数の和:404065

約数の個数: 18

約数和(自身を含む): 87679284

約数和(自身を除く): 47274184

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 404051, 808102, 1616204, 2020255, 4040510, 8081020, 10101275, 20202550, 40405100]

約数ペア:

[(1, 40405100), (2, 20202550), (4, 10101275), (5, 8081020), (10, 4040510), (20, 2020255), (25, 1616204), (50, 808102), (100, 404051)]