1080

素因数分解:

$2^3\times 3^3\times 5^1$

素因数の和:20

約数の個数: 32

約数和(自身を含む): 3600

約数和(自身を除く): 2520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080]

約数ペア:

[(1, 1080), (2, 540), (3, 360), (4, 270), (5, 216), (6, 180), (8, 135), (9, 120), (10, 108), (12, 90), (15, 72), (18, 60), (20, 54), (24, 45), (27, 40), (30, 36)]