40487980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{155723}}^1$

素因数の和:155745

約数の個数: 24

約数和(自身を含む): 91565712

約数和(自身を除く): 51077732

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 155723, 311446, 622892, 778615, 1557230, 2024399, 3114460, 4048798, 8097596, 10121995, 20243990, 40487980]

約数ペア:

[(1, 40487980), (2, 20243990), (4, 10121995), (5, 8097596), (10, 4048798), (13, 3114460), (20, 2024399), (26, 1557230), (52, 778615), (65, 622892), (130, 311446), (260, 155723)]