81000720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{112501}}^1$

素因数の和:112520

約数の個数: 60

約数和(自身を含む): 272029836

約数和(自身を除く): 191029116

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 112501, 225002, 337503, 450004, 562505, 675006, 900008, 1012509, 1125010, 1350012, 1687515, 1800016, 2025018, 2250020, 2700024, 3375030, 4050036, 4500040, 5062545, 5400048, 6750060, 8100072, 9000080, 10125090, 13500120, 16200144, 20250180, 27000240, 40500360, 81000720]

約数ペア:

[(1, 81000720), (2, 40500360), (3, 27000240), (4, 20250180), (5, 16200144), (6, 13500120), (8, 10125090), (9, 9000080), (10, 8100072), (12, 6750060), (15, 5400048), (16, 5062545), (18, 4500040), (20, 4050036), (24, 3375030), (30, 2700024), (36, 2250020), (40, 2025018), (45, 1800016), (48, 1687515), (60, 1350012), (72, 1125010), (80, 1012509), (90, 900008), (120, 675006), (144, 562505), (180, 450004), (240, 337503), (360, 225002), (720, 112501)]