90689620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{647783}}^1$

素因数の和:647799

約数の個数: 24

約数和(自身を含む): 217655424

約数和(自身を除く): 126965804

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 647783, 1295566, 2591132, 3238915, 4534481, 6477830, 9068962, 12955660, 18137924, 22672405, 45344810, 90689620]

約数ペア:

[(1, 90689620), (2, 45344810), (4, 22672405), (5, 18137924), (7, 12955660), (10, 9068962), (14, 6477830), (20, 4534481), (28, 3238915), (35, 2591132), (70, 1295566), (140, 647783)]