20772207

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:317

約数の個数: 40

約数和(自身を含む): 33105600

約数和(自身を除く): 12333393

約数列:

[1, 3, 9, 27, 29, 37, 81, 87, 111, 239, 261, 333, 717, 783, 999, 1073, 2151, 2349, 2997, 3219, 6453, 6931, 8843, 9657, 19359, 20793, 26529, 28971, 62379, 79587, 86913, 187137, 238761, 256447, 561411, 716283, 769341, 2308023, 6924069, 20772207]

約数ペア:

[(1, 20772207), (3, 6924069), (9, 2308023), (27, 769341), (29, 716283), (37, 561411), (81, 256447), (87, 238761), (111, 187137), (239, 86913), (261, 79587), (333, 62379), (717, 28971), (783, 26529), (999, 20793), (1073, 19359), (2151, 9657), (2349, 8843), (2997, 6931), (3219, 6453)]