8100

素因数分解:

$2^2\times 3^4\times 5^2$

素因数の和:26

約数の個数: 45

約数和(自身を含む): 26257

約数和(自身を除く): 18157

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 108, 135, 150, 162, 180, 225, 270, 300, 324, 405, 450, 540, 675, 810, 900, 1350, 1620, 2025, 2700, 4050, 8100]

約数ペア:

[(1, 8100), (2, 4050), (3, 2700), (4, 2025), (5, 1620), (6, 1350), (9, 900), (10, 810), (12, 675), (15, 540), (18, 450), (20, 405), (25, 324), (27, 300), (30, 270), (36, 225), (45, 180), (50, 162), (54, 150), (60, 135), (75, 108), (81, 100)]