1260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1$

素因数の和:22

約数の個数: 36

約数和(自身を含む): 4368

約数和(自身を除く): 3108

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260]

約数ペア:

[(1, 1260), (2, 630), (3, 420), (4, 315), (5, 252), (6, 210), (7, 180), (9, 140), (10, 126), (12, 105), (14, 90), (15, 84), (18, 70), (20, 63), (21, 60), (28, 45), (30, 42), (35, 36)]