3780

素因数分解:

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

素因数の和:25

約数の個数: 48

約数和(自身を含む): 13440

約数和(自身を除く): 9660

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780]

約数ペア:

[(1, 3780), (2, 1890), (3, 1260), (4, 945), (5, 756), (6, 630), (7, 540), (9, 420), (10, 378), (12, 315), (14, 270), (15, 252), (18, 210), (20, 189), (21, 180), (27, 140), (28, 135), (30, 126), (35, 108), (36, 105), (42, 90), (45, 84), (54, 70), (60, 63)]