27981440

素因数分解:

$2^7\times 5^1\times {\mathrm{43721}}^1$

素因数の和:43740

約数の個数: 32

約数和(自身を含む): 66894660

約数和(自身を除く): 38913220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 43721, 87442, 174884, 218605, 349768, 437210, 699536, 874420, 1399072, 1748840, 2798144, 3497680, 5596288, 6995360, 13990720, 27981440]

約数ペア:

[(1, 27981440), (2, 13990720), (4, 6995360), (5, 5596288), (8, 3497680), (10, 2798144), (16, 1748840), (20, 1399072), (32, 874420), (40, 699536), (64, 437210), (80, 349768), (128, 218605), (160, 174884), (320, 87442), (640, 43721)]