21758215

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{5953}}^1$

素因数の和:6018

約数の個数: 16

約数和(自身を含む): 28293408

約数和(自身を除く): 6535193

約数列:

[1, 5, 17, 43, 85, 215, 731, 3655, 5953, 29765, 101201, 255979, 506005, 1279895, 4351643, 21758215]

約数ペア:

[(1, 21758215), (5, 4351643), (17, 1279895), (43, 506005), (85, 255979), (215, 101201), (731, 29765), (3655, 5953)]