201227985

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{638819}}^1$

素因数の和:638837

約数の個数: 24

約数和(自身を含む): 398623680

約数和(自身を除く): 197395695

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 638819, 1916457, 3194095, 4471733, 5749371, 9582285, 13415199, 22358665, 28746855, 40245597, 67075995, 201227985]

約数ペア:

[(1, 201227985), (3, 67075995), (5, 40245597), (7, 28746855), (9, 22358665), (15, 13415199), (21, 9582285), (35, 5749371), (45, 4471733), (63, 3194095), (105, 1916457), (315, 638819)]