21122540

素因数分解:

$2^2\times 5^1\times {\mathrm{457}}^1\times {\mathrm{2311}}^1$

素因数の和:2777

約数の個数: 24

約数和(自身を含む): 44473632

約数和(自身を除く): 23351092

約数列:

[1, 2, 4, 5, 10, 20, 457, 914, 1828, 2285, 2311, 4570, 4622, 9140, 9244, 11555, 23110, 46220, 1056127, 2112254, 4224508, 5280635, 10561270, 21122540]

約数ペア:

[(1, 21122540), (2, 10561270), (4, 5280635), (5, 4224508), (10, 2112254), (20, 1056127), (457, 46220), (914, 23110), (1828, 11555), (2285, 9244), (2311, 9140), (4570, 4622)]