21011140

素因数分解:

$2^2\times 5^1\times {\mathrm{859}}^1\times {\mathrm{1223}}^1$

素因数の和:2091

約数の個数: 24

約数和(自身を含む): 44210880

約数和(自身を除く): 23199740

約数列:

[1, 2, 4, 5, 10, 20, 859, 1223, 1718, 2446, 3436, 4295, 4892, 6115, 8590, 12230, 17180, 24460, 1050557, 2101114, 4202228, 5252785, 10505570, 21011140]

約数ペア:

[(1, 21011140), (2, 10505570), (4, 5252785), (5, 4202228), (10, 2101114), (20, 1050557), (859, 24460), (1223, 17180), (1718, 12230), (2446, 8590), (3436, 6115), (4295, 4892)]