989870105

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{811}}^2$

素因数の和:1677

約数の個数: 24

約数和(自身を含む): 1390821696

約数和(自身を除く): 400951591

約数列:

[1, 5, 7, 35, 43, 215, 301, 811, 1505, 4055, 5677, 28385, 34873, 174365, 244111, 657721, 1220555, 3288605, 4604047, 23020235, 28282003, 141410015, 197974021, 989870105]

約数ペア:

[(1, 989870105), (5, 197974021), (7, 141410015), (35, 28282003), (43, 23020235), (215, 4604047), (301, 3288605), (811, 1220555), (1505, 657721), (4055, 244111), (5677, 174365), (28385, 34873)]