21047745

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{23003}}^1$

素因数の和:23072

約数の個数: 16

約数和(自身を含む): 34229952

約数和(自身を除く): 13182207

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 23003, 69009, 115015, 345045, 1403183, 4209549, 7015915, 21047745]

約数ペア:

[(1, 21047745), (3, 7015915), (5, 4209549), (15, 1403183), (61, 345045), (183, 115015), (305, 69009), (915, 23003)]