21319605

素因数分解:

$3^6\times 5^1\times {\mathrm{5849}}^1$

素因数の和:5872

約数の個数: 28

約数和(自身を含む): 38364300

約数和(自身を除く): 17044695

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 5849, 17547, 29245, 52641, 87735, 157923, 263205, 473769, 789615, 1421307, 2368845, 4263921, 7106535, 21319605]

約数ペア:

[(1, 21319605), (3, 7106535), (5, 4263921), (9, 2368845), (15, 1421307), (27, 789615), (45, 473769), (81, 263205), (135, 157923), (243, 87735), (405, 52641), (729, 29245), (1215, 17547), (3645, 5849)]