20396205

素因数分解:

$3^5\times 5^1\times {\mathrm{16787}}^1$

素因数の和:16807

約数の個数: 24

約数和(自身を含む): 36664992

約数和(自身を除く): 16268787

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 16787, 50361, 83935, 151083, 251805, 453249, 755415, 1359747, 2266245, 4079241, 6798735, 20396205]

約数ペア:

[(1, 20396205), (3, 6798735), (5, 4079241), (9, 2266245), (15, 1359747), (27, 755415), (45, 453249), (81, 251805), (135, 151083), (243, 83935), (405, 50361), (1215, 16787)]