80239940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{467}}^1$

素因数の和:569

約数の個数: 72

約数和(自身を含む): 188225856

約数和(自身を除く): 107985916

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 121, 142, 220, 242, 284, 355, 467, 484, 605, 710, 781, 934, 1210, 1420, 1562, 1868, 2335, 2420, 3124, 3905, 4670, 5137, 7810, 8591, 9340, 10274, 15620, 17182, 20548, 25685, 33157, 34364, 42955, 51370, 56507, 66314, 85910, 102740, 113014, 132628, 165785, 171820, 226028, 282535, 331570, 364727, 565070, 663140, 729454, 1130140, 1458908, 1823635, 3647270, 4011997, 7294540, 8023994, 16047988, 20059985, 40119970, 80239940]

約数ペア:

[(1, 80239940), (2, 40119970), (4, 20059985), (5, 16047988), (10, 8023994), (11, 7294540), (20, 4011997), (22, 3647270), (44, 1823635), (55, 1458908), (71, 1130140), (110, 729454), (121, 663140), (142, 565070), (220, 364727), (242, 331570), (284, 282535), (355, 226028), (467, 171820), (484, 165785), (605, 132628), (710, 113014), (781, 102740), (934, 85910), (1210, 66314), (1420, 56507), (1562, 51370), (1868, 42955), (2335, 34364), (2420, 33157), (3124, 25685), (3905, 20548), (4670, 17182), (5137, 15620), (7810, 10274), (8591, 9340)]