2160

素因数分解:

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

素因数の和:22

約数の個数: 40

約数和(自身を含む): 7440

約数和(自身を除く): 5280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 180, 216, 240, 270, 360, 432, 540, 720, 1080, 2160]

約数ペア:

[(1, 2160), (2, 1080), (3, 720), (4, 540), (5, 432), (6, 360), (8, 270), (9, 240), (10, 216), (12, 180), (15, 144), (16, 135), (18, 120), (20, 108), (24, 90), (27, 80), (30, 72), (36, 60), (40, 54), (45, 48)]