81639540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{453553}}^1$

素因数の和:453568

約数の個数: 36

約数和(自身を含む): 247640484

約数和(自身を除く): 166000944

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 453553, 907106, 1360659, 1814212, 2267765, 2721318, 4081977, 4535530, 5442636, 6803295, 8163954, 9071060, 13606590, 16327908, 20409885, 27213180, 40819770, 81639540]

約数ペア:

[(1, 81639540), (2, 40819770), (3, 27213180), (4, 20409885), (5, 16327908), (6, 13606590), (9, 9071060), (10, 8163954), (12, 6803295), (15, 5442636), (18, 4535530), (20, 4081977), (30, 2721318), (36, 2267765), (45, 1814212), (60, 1360659), (90, 907106), (180, 453553)]