807680

素因数分解:

$2^8\times 5^1\times {\mathrm{631}}^1$

素因数の和:652

約数の個数: 36

約数和(自身を含む): 1937712

約数和(自身を除く): 1130032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 631, 640, 1262, 1280, 2524, 3155, 5048, 6310, 10096, 12620, 20192, 25240, 40384, 50480, 80768, 100960, 161536, 201920, 403840, 807680]

約数ペア:

[(1, 807680), (2, 403840), (4, 201920), (5, 161536), (8, 100960), (10, 80768), (16, 50480), (20, 40384), (32, 25240), (40, 20192), (64, 12620), (80, 10096), (128, 6310), (160, 5048), (256, 3155), (320, 2524), (631, 1280), (640, 1262)]