28287711

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{20543}}^1$

素因数の和:20572

約数の個数: 20

約数和(自身を含む): 44744832

約数和(自身を除く): 16457121

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 20543, 61629, 184887, 349231, 554661, 1047693, 1663983, 3143079, 9429237, 28287711]

約数ペア:

[(1, 28287711), (3, 9429237), (9, 3143079), (17, 1663983), (27, 1047693), (51, 554661), (81, 349231), (153, 184887), (459, 61629), (1377, 20543)]