2040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1$

素因数の和:31

約数の個数: 32

約数和(自身を含む): 6480

約数和(自身を除く): 4440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040]

約数ペア:

[(1, 2040), (2, 1020), (3, 680), (4, 510), (5, 408), (6, 340), (8, 255), (10, 204), (12, 170), (15, 136), (17, 120), (20, 102), (24, 85), (30, 68), (34, 60), (40, 51)]