1281920

素因数分解:

$2^7\times 5^1\times {\mathrm{2003}}^1$

素因数の和:2022

約数の個数: 32

約数和(自身を含む): 3066120

約数和(自身を除く): 1784200

約数列:

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

約数ペア:

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