21536901

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{439}}^1$

素因数の和:550

約数の個数: 32

約数和(自身を含む): 33792000

約数和(自身を除く): 12255099

約数列:

[1, 3, 9, 23, 27, 69, 79, 207, 237, 439, 621, 711, 1317, 1817, 2133, 3951, 5451, 10097, 11853, 16353, 30291, 34681, 49059, 90873, 104043, 272619, 312129, 797663, 936387, 2392989, 7178967, 21536901]

約数ペア:

[(1, 21536901), (3, 7178967), (9, 2392989), (23, 936387), (27, 797663), (69, 312129), (79, 272619), (207, 104043), (237, 90873), (439, 49059), (621, 34681), (711, 30291), (1317, 16353), (1817, 11853), (2133, 10097), (3951, 5451)]