21131728

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32213}}^1$

素因数の和:32262

約数の個数: 20

約数和(自身を含む): 41942628

約数和(自身を除く): 20810900

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32213, 64426, 128852, 257704, 515408, 1320733, 2641466, 5282932, 10565864, 21131728]

約数ペア:

[(1, 21131728), (2, 10565864), (4, 5282932), (8, 2641466), (16, 1320733), (41, 515408), (82, 257704), (164, 128852), (328, 64426), (656, 32213)]