1821440

素因数分解:

$2^8\times 5^1\times {\mathrm{1423}}^1$

素因数の和:1444

約数の個数: 36

約数和(自身を含む): 4365984

約数和(自身を除く): 2544544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 1423, 2846, 5692, 7115, 11384, 14230, 22768, 28460, 45536, 56920, 91072, 113840, 182144, 227680, 364288, 455360, 910720, 1821440]

約数ペア:

[(1, 1821440), (2, 910720), (4, 455360), (5, 364288), (8, 227680), (10, 182144), (16, 113840), (20, 91072), (32, 56920), (40, 45536), (64, 28460), (80, 22768), (128, 14230), (160, 11384), (256, 7115), (320, 5692), (640, 2846), (1280, 1423)]