21085605

素因数分解:

$3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3371}}^1$

素因数の和:3521

約数の個数: 24

約数和(自身を含む): 36822240

約数和(自身を除く): 15736635

約数列:

[1, 3, 5, 9, 15, 45, 139, 417, 695, 1251, 2085, 3371, 6255, 10113, 16855, 30339, 50565, 151695, 468569, 1405707, 2342845, 4217121, 7028535, 21085605]

約数ペア:

[(1, 21085605), (3, 7028535), (5, 4217121), (9, 2342845), (15, 1405707), (45, 468569), (139, 151695), (417, 50565), (695, 30339), (1251, 16855), (2085, 10113), (3371, 6255)]