138915973

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 173629440

約数和(自身を除く): 34713467

約数列:

[1, 7, 19, 47, 71, 133, 313, 329, 497, 893, 1349, 2191, 3337, 5947, 6251, 9443, 14711, 22223, 23359, 41629, 63403, 102977, 155561, 279509, 422237, 443821, 1044481, 1956563, 2955659, 7311367, 19845139, 138915973]

約数ペア:

[(1, 138915973), (7, 19845139), (19, 7311367), (47, 2955659), (71, 1956563), (133, 1044481), (313, 443821), (329, 422237), (497, 279509), (893, 155561), (1349, 102977), (2191, 63403), (3337, 41629), (5947, 23359), (6251, 22223), (9443, 14711)]