20510565

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^2\times {\mathrm{619}}^1$

素因数の和:721

約数の個数: 24

約数和(自身を含む): 33584160

約数和(自身を除く): 13073595

約数列:

[1, 3, 5, 15, 47, 141, 235, 619, 705, 1857, 2209, 3095, 6627, 9285, 11045, 29093, 33135, 87279, 145465, 436395, 1367371, 4102113, 6836855, 20510565]

約数ペア:

[(1, 20510565), (3, 6836855), (5, 4102113), (15, 1367371), (47, 436395), (141, 145465), (235, 87279), (619, 33135), (705, 29093), (1857, 11045), (2209, 9285), (3095, 6627)]