21162740

素因数分解:

$2^2\times 5^1\times {\mathrm{283}}^1\times {\mathrm{3739}}^1$

素因数の和:4031

約数の個数: 24

約数和(自身を含む): 44610720

約数和(自身を除く): 23447980

約数列:

[1, 2, 4, 5, 10, 20, 283, 566, 1132, 1415, 2830, 3739, 5660, 7478, 14956, 18695, 37390, 74780, 1058137, 2116274, 4232548, 5290685, 10581370, 21162740]

約数ペア:

[(1, 21162740), (2, 10581370), (4, 5290685), (5, 4232548), (10, 2116274), (20, 1058137), (283, 74780), (566, 37390), (1132, 18695), (1415, 14956), (2830, 7478), (3739, 5660)]