21253605

素因数分解:

$3^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{12539}}^1$

素因数の和:12660

約数の個数: 16

約数和(自身を含む): 34309440

約数和(自身を除く): 13055835

約数列:

[1, 3, 5, 15, 113, 339, 565, 1695, 12539, 37617, 62695, 188085, 1416907, 4250721, 7084535, 21253605]

約数ペア:

[(1, 21253605), (3, 7084535), (5, 4250721), (15, 1416907), (113, 188085), (339, 62695), (565, 37617), (1695, 12539)]