20998989

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{4513}}^1$

素因数の和:4577

約数の個数: 24

約数和(自身を含む): 33800832

約数和(自身を除く): 12801843

約数列:

[1, 3, 9, 11, 33, 47, 99, 141, 423, 517, 1551, 4513, 4653, 13539, 40617, 49643, 148929, 212111, 446787, 636333, 1908999, 2333221, 6999663, 20998989]

約数ペア:

[(1, 20998989), (3, 6999663), (9, 2333221), (11, 1908999), (33, 636333), (47, 446787), (99, 212111), (141, 148929), (423, 49643), (517, 40617), (1551, 13539), (4513, 4653)]