21164085

素因数分解:

$3^5\times 5^1\times {\mathrm{17419}}^1$

素因数の和:17439

約数の個数: 24

約数和(自身を含む): 38045280

約数和(自身を除く): 16881195

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17419, 52257, 87095, 156771, 261285, 470313, 783855, 1410939, 2351565, 4232817, 7054695, 21164085]

約数ペア:

[(1, 21164085), (3, 7054695), (5, 4232817), (9, 2351565), (15, 1410939), (27, 783855), (45, 470313), (81, 261285), (135, 156771), (243, 87095), (405, 52257), (1215, 17419)]