1271680

素因数分解:

$2^7\times 5^1\times {\mathrm{1987}}^1$

素因数の和:2006

約数の個数: 32

約数和(自身を含む): 3041640

約数和(自身を除く): 1769960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1987, 3974, 7948, 9935, 15896, 19870, 31792, 39740, 63584, 79480, 127168, 158960, 254336, 317920, 635840, 1271680]

約数ペア:

[(1, 1271680), (2, 635840), (4, 317920), (5, 254336), (8, 158960), (10, 127168), (16, 79480), (20, 63584), (32, 39740), (40, 31792), (64, 19870), (80, 15896), (128, 9935), (160, 7948), (320, 3974), (640, 1987)]