20213187

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{307}}^1\times {\mathrm{1291}}^1$

素因数の和:1618

約数の個数: 16

約数和(自身を含む): 28651392

約数和(自身を除く): 8438205

約数列:

[1, 3, 17, 51, 307, 921, 1291, 3873, 5219, 15657, 21947, 65841, 396337, 1189011, 6737729, 20213187]

約数ペア:

[(1, 20213187), (3, 6737729), (17, 1189011), (51, 396337), (307, 65841), (921, 21947), (1291, 15657), (3873, 5219)]