21579885

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9403}}^1$

素因数の和:9434

約数の個数: 32

約数和(自身を含む): 40625280

約数和(自身を除く): 19045395

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9403, 28209, 47015, 84627, 141045, 159851, 253881, 423135, 479553, 799255, 1269405, 1438659, 2397765, 4315977, 7193295, 21579885]

約数ペア:

[(1, 21579885), (3, 7193295), (5, 4315977), (9, 2397765), (15, 1438659), (17, 1269405), (27, 799255), (45, 479553), (51, 423135), (85, 253881), (135, 159851), (153, 141045), (255, 84627), (459, 47015), (765, 28209), (2295, 9403)]