28915299

素因数分解:

$3^5\times 7^1\times {\mathrm{89}}^1\times {\mathrm{191}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 50319360

約数和(自身を除く): 21404061

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 89, 189, 191, 243, 267, 567, 573, 623, 801, 1337, 1701, 1719, 1869, 2403, 4011, 5157, 5607, 7209, 12033, 15471, 16821, 16999, 21627, 36099, 46413, 50463, 50997, 108297, 118993, 151389, 152991, 324891, 356979, 458973, 1070937, 1376919, 3212811, 4130757, 9638433, 28915299]

約数ペア:

[(1, 28915299), (3, 9638433), (7, 4130757), (9, 3212811), (21, 1376919), (27, 1070937), (63, 458973), (81, 356979), (89, 324891), (189, 152991), (191, 151389), (243, 118993), (267, 108297), (567, 50997), (573, 50463), (623, 46413), (801, 36099), (1337, 21627), (1701, 16999), (1719, 16821), (1869, 15471), (2403, 12033), (4011, 7209), (5157, 5607)]