28705911

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1493}}^1$

素因数の和:1555

約数の個数: 32

約数和(自身を含む): 45178560

約数和(自身を除く): 16472649

約数列:

[1, 3, 13, 17, 29, 39, 51, 87, 221, 377, 493, 663, 1131, 1479, 1493, 4479, 6409, 19227, 19409, 25381, 43297, 58227, 76143, 129891, 329953, 562861, 736049, 989859, 1688583, 2208147, 9568637, 28705911]

約数ペア:

[(1, 28705911), (3, 9568637), (13, 2208147), (17, 1688583), (29, 989859), (39, 736049), (51, 562861), (87, 329953), (221, 129891), (377, 76143), (493, 58227), (663, 43297), (1131, 25381), (1479, 19409), (1493, 19227), (4479, 6409)]