21011090

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{373}}^1$

素因数の和:554

約数の個数: 32

約数和(自身を含む): 39099456

約数和(自身を除く): 18088366

約数列:

[1, 2, 5, 10, 43, 86, 131, 215, 262, 373, 430, 655, 746, 1310, 1865, 3730, 5633, 11266, 16039, 28165, 32078, 48863, 56330, 80195, 97726, 160390, 244315, 488630, 2101109, 4202218, 10505545, 21011090]

約数ペア:

[(1, 21011090), (2, 10505545), (5, 4202218), (10, 2101109), (43, 488630), (86, 244315), (131, 160390), (215, 97726), (262, 80195), (373, 56330), (430, 48863), (655, 32078), (746, 28165), (1310, 16039), (1865, 11266), (3730, 5633)]