21254360

素因数分解:

$2^3\times 5^1\times {\mathrm{531359}}^1$

素因数の和:531370

約数の個数: 16

約数和(自身を含む): 47822400

約数和(自身を除く): 26568040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 531359, 1062718, 2125436, 2656795, 4250872, 5313590, 10627180, 21254360]

約数ペア:

[(1, 21254360), (2, 10627180), (4, 5313590), (5, 4250872), (8, 2656795), (10, 2125436), (20, 1062718), (40, 531359)]