1200

素因数分解:

$2^4\times 3^1\times 5^2$

素因数の和:21

約数の個数: 30

約数和(自身を含む): 3844

約数和(自身を除く): 2644

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 120, 150, 200, 240, 300, 400, 600, 1200]

約数ペア:

[(1, 1200), (2, 600), (3, 400), (4, 300), (5, 240), (6, 200), (8, 150), (10, 120), (12, 100), (15, 80), (16, 75), (20, 60), (24, 50), (25, 48), (30, 40)]