81647820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{453599}}^1$

素因数の和:453614

約数の個数: 36

約数和(自身を含む): 247665600

約数和(自身を除く): 166017780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 453599, 907198, 1360797, 1814396, 2267995, 2721594, 4082391, 4535990, 5443188, 6803985, 8164782, 9071980, 13607970, 16329564, 20411955, 27215940, 40823910, 81647820]

約数ペア:

[(1, 81647820), (2, 40823910), (3, 27215940), (4, 20411955), (5, 16329564), (6, 13607970), (9, 9071980), (10, 8164782), (12, 6803985), (15, 5443188), (18, 4535990), (20, 4082391), (30, 2721594), (36, 2267995), (45, 1814396), (60, 1360797), (90, 907198), (180, 453599)]