21964365

素因数分解:

$3^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{281}}^1$

素因数の和:491

約数の個数: 40

約数和(自身を含む): 39718008

約数和(自身を除く): 17753643

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 193, 281, 405, 579, 843, 965, 1405, 1737, 2529, 2895, 4215, 5211, 7587, 8685, 12645, 15633, 22761, 26055, 37935, 54233, 78165, 113805, 162699, 271165, 488097, 813495, 1464291, 2440485, 4392873, 7321455, 21964365]

約数ペア:

[(1, 21964365), (3, 7321455), (5, 4392873), (9, 2440485), (15, 1464291), (27, 813495), (45, 488097), (81, 271165), (135, 162699), (193, 113805), (281, 78165), (405, 54233), (579, 37935), (843, 26055), (965, 22761), (1405, 15633), (1737, 12645), (2529, 8685), (2895, 7587), (4215, 5211)]