1664886769

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{201049}}^1$

素因数の和:201089

約数の個数: 18

約数和(自身を含む): 2097152550

約数和(自身を除く): 432265781

約数列:

[1, 7, 13, 49, 91, 169, 637, 1183, 8281, 201049, 1407343, 2613637, 9851401, 18295459, 33977281, 128068213, 237840967, 1664886769]

約数ペア:

[(1, 1664886769), (7, 237840967), (13, 128068213), (49, 33977281), (91, 18295459), (169, 9851401), (637, 2613637), (1183, 1407343), (8281, 201049)]