2019989680

素因数分解:

$2^4\times 5^1\times {\mathrm{25249871}}^1$

素因数の和:25249884

約数の個数: 20

約数和(自身を含む): 4696476192

約数和(自身を除く): 2676486512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25249871, 50499742, 100999484, 126249355, 201998968, 252498710, 403997936, 504997420, 1009994840, 2019989680]

約数ペア:

[(1, 2019989680), (2, 1009994840), (4, 504997420), (5, 403997936), (8, 252498710), (10, 201998968), (16, 126249355), (20, 100999484), (40, 50499742), (80, 25249871)]