19498617

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{191}}^1\times {\mathrm{199}}^1$

素因数の和:418

約数の個数: 32

約数和(自身を含む): 30720000

約数和(自身を除く): 11221383

約数列:

[1, 3, 9, 19, 27, 57, 171, 191, 199, 513, 573, 597, 1719, 1791, 3629, 3781, 5157, 5373, 10887, 11343, 32661, 34029, 38009, 97983, 102087, 114027, 342081, 722171, 1026243, 2166513, 6499539, 19498617]

約数ペア:

[(1, 19498617), (3, 6499539), (9, 2166513), (19, 1026243), (27, 722171), (57, 342081), (171, 114027), (191, 102087), (199, 97983), (513, 38009), (573, 34029), (597, 32661), (1719, 11343), (1791, 10887), (3629, 5373), (3781, 5157)]