28678779

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{353}}^1$

素因数の和:441

約数の個数: 40

約数和(自身を含む): 46260720

約数和(自身を除く): 17581941

約数列:

[1, 3, 9, 17, 27, 51, 59, 81, 153, 177, 353, 459, 531, 1003, 1059, 1377, 1593, 3009, 3177, 4779, 6001, 9027, 9531, 18003, 20827, 27081, 28593, 54009, 62481, 81243, 162027, 187443, 354059, 486081, 562329, 1062177, 1686987, 3186531, 9559593, 28678779]

約数ペア:

[(1, 28678779), (3, 9559593), (9, 3186531), (17, 1686987), (27, 1062177), (51, 562329), (59, 486081), (81, 354059), (153, 187443), (177, 162027), (353, 81243), (459, 62481), (531, 54009), (1003, 28593), (1059, 27081), (1377, 20827), (1593, 18003), (3009, 9531), (3177, 9027), (4779, 6001)]