20718216

素因数分解:

$2^3\times 3^2\times {\mathrm{23}}^1\times {\mathrm{12511}}^1$

素因数の和:12546

約数の個数: 48

約数和(自身を含む): 58556160

約数和(自身を除く): 37837944

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 23, 24, 36, 46, 69, 72, 92, 138, 184, 207, 276, 414, 552, 828, 1656, 12511, 25022, 37533, 50044, 75066, 100088, 112599, 150132, 225198, 287753, 300264, 450396, 575506, 863259, 900792, 1151012, 1726518, 2302024, 2589777, 3453036, 5179554, 6906072, 10359108, 20718216]

約数ペア:

[(1, 20718216), (2, 10359108), (3, 6906072), (4, 5179554), (6, 3453036), (8, 2589777), (9, 2302024), (12, 1726518), (18, 1151012), (23, 900792), (24, 863259), (36, 575506), (46, 450396), (69, 300264), (72, 287753), (92, 225198), (138, 150132), (184, 112599), (207, 100088), (276, 75066), (414, 50044), (552, 37533), (828, 25022), (1656, 12511)]