21063255

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{82601}}^1$

素因数の和:82626

約数の個数: 16

約数和(自身を含む): 35684064

約数和(自身を除く): 14620809

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 82601, 247803, 413005, 1239015, 1404217, 4212651, 7021085, 21063255]

約数ペア:

[(1, 21063255), (3, 7021085), (5, 4212651), (15, 1404217), (17, 1239015), (51, 413005), (85, 247803), (255, 82601)]