21055605

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{82571}}^1$

素因数の和:82596

約数の個数: 16

約数和(自身を含む): 35671104

約数和(自身を除く): 14615499

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 82571, 247713, 412855, 1238565, 1403707, 4211121, 7018535, 21055605]

約数ペア:

[(1, 21055605), (3, 7018535), (5, 4211121), (15, 1403707), (17, 1238565), (51, 412855), (85, 247713), (255, 82571)]