8081680

素因数分解:

$2^4\times 5^1\times {\mathrm{101021}}^1$

素因数の和:101034

約数の個数: 20

約数和(自身を含む): 18790092

約数和(自身を除く): 10708412

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101021, 202042, 404084, 505105, 808168, 1010210, 1616336, 2020420, 4040840, 8081680]

約数ペア:

[(1, 8081680), (2, 4040840), (4, 2020420), (5, 1616336), (8, 1010210), (10, 808168), (16, 505105), (20, 404084), (40, 202042), (80, 101021)]