18986805

素因数分解:

$3^6\times 5^1\times {\mathrm{5209}}^1$

素因数の和:5232

約数の個数: 28

約数和(自身を含む): 34167180

約数和(自身を除く): 15180375

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 5209, 15627, 26045, 46881, 78135, 140643, 234405, 421929, 703215, 1265787, 2109645, 3797361, 6328935, 18986805]

約数ペア:

[(1, 18986805), (3, 6328935), (5, 3797361), (9, 2109645), (15, 1265787), (27, 703215), (45, 421929), (81, 234405), (135, 140643), (243, 78135), (405, 46881), (729, 26045), (1215, 15627), (3645, 5209)]