201991905

素因数分解:

$3^2\times 5^1\times {\mathrm{479}}^1\times {\mathrm{9371}}^1$

素因数の和:9861

約数の個数: 24

約数和(自身を含む): 350887680

約数和(自身を除く): 148895775

約数列:

[1, 3, 5, 9, 15, 45, 479, 1437, 2395, 4311, 7185, 9371, 21555, 28113, 46855, 84339, 140565, 421695, 4488709, 13466127, 22443545, 40398381, 67330635, 201991905]

約数ペア:

[(1, 201991905), (3, 67330635), (5, 40398381), (9, 22443545), (15, 13466127), (45, 4488709), (479, 421695), (1437, 140565), (2395, 84339), (4311, 46855), (7185, 28113), (9371, 21555)]