21897020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{64403}}^1$

素因数の和:64429

約数の個数: 24

約数和(自身を含む): 48689424

約数和(自身を除く): 26792404

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 64403, 128806, 257612, 322015, 644030, 1094851, 1288060, 2189702, 4379404, 5474255, 10948510, 21897020]

約数ペア:

[(1, 21897020), (2, 10948510), (4, 5474255), (5, 4379404), (10, 2189702), (17, 1288060), (20, 1094851), (34, 644030), (68, 322015), (85, 257612), (170, 128806), (340, 64403)]