278987660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1992769}}^1$

素因数の和:1992785

約数の個数: 24

約数和(自身を含む): 669570720

約数和(自身を除く): 390583060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1992769, 3985538, 7971076, 9963845, 13949383, 19927690, 27898766, 39855380, 55797532, 69746915, 139493830, 278987660]

約数ペア:

[(1, 278987660), (2, 139493830), (4, 69746915), (5, 55797532), (7, 39855380), (10, 27898766), (14, 19927690), (20, 13949383), (28, 9963845), (35, 7971076), (70, 3985538), (140, 1992769)]