2520

素因数分解:

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

素因数の和:24

約数の個数: 48

約数和(自身を含む): 9360

約数和(自身を除く): 6840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520]

約数ペア:

[(1, 2520), (2, 1260), (3, 840), (4, 630), (5, 504), (6, 420), (7, 360), (8, 315), (9, 280), (10, 252), (12, 210), (14, 180), (15, 168), (18, 140), (20, 126), (21, 120), (24, 105), (28, 90), (30, 84), (35, 72), (36, 70), (40, 63), (42, 60), (45, 56)]