21565768

素因数分解:

$2^3\times 7^1\times {\mathrm{89}}^1\times {\mathrm{4327}}^1$

素因数の和:4429

約数の個数: 32

約数和(自身を含む): 46742400

約数和(自身を除く): 25176632

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 89, 178, 356, 623, 712, 1246, 2492, 4327, 4984, 8654, 17308, 30289, 34616, 60578, 121156, 242312, 385103, 770206, 1540412, 2695721, 3080824, 5391442, 10782884, 21565768]

約数ペア:

[(1, 21565768), (2, 10782884), (4, 5391442), (7, 3080824), (8, 2695721), (14, 1540412), (28, 770206), (56, 385103), (89, 242312), (178, 121156), (356, 60578), (623, 34616), (712, 30289), (1246, 17308), (2492, 8654), (4327, 4984)]