19801617

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{751}}^1$

素因数の和:829

約数の個数: 32

約数和(自身を含む): 31186944

約数和(自身を除く): 11385327

約数列:

[1, 3, 11, 17, 33, 47, 51, 141, 187, 517, 561, 751, 799, 1551, 2253, 2397, 8261, 8789, 12767, 24783, 26367, 35297, 38301, 105891, 140437, 388267, 421311, 600049, 1164801, 1800147, 6600539, 19801617]

約数ペア:

[(1, 19801617), (3, 6600539), (11, 1800147), (17, 1164801), (33, 600049), (47, 421311), (51, 388267), (141, 140437), (187, 105891), (517, 38301), (561, 35297), (751, 26367), (799, 24783), (1551, 12767), (2253, 8789), (2397, 8261)]