2563840

素因数分解:

$2^8\times 5^1\times {\mathrm{2003}}^1$

素因数の和:2024

約数の個数: 36

約数和(自身を含む): 6144264

約数和(自身を除く): 3580424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 2003, 4006, 8012, 10015, 16024, 20030, 32048, 40060, 64096, 80120, 128192, 160240, 256384, 320480, 512768, 640960, 1281920, 2563840]

約数ペア:

[(1, 2563840), (2, 1281920), (4, 640960), (5, 512768), (8, 320480), (10, 256384), (16, 160240), (20, 128192), (32, 80120), (40, 64096), (64, 40060), (80, 32048), (128, 20030), (160, 16024), (256, 10015), (320, 8012), (640, 4006), (1280, 2003)]