278939128

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{157771}}^1$

素因数の和:157807

約数の個数: 32

約数和(自身を含む): 596378160

約数和(自身を除く): 317439032

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 157771, 315542, 631084, 1262168, 2051023, 2682107, 4102046, 5364214, 8204092, 10728428, 16408184, 21456856, 34867391, 69734782, 139469564, 278939128]

約数ペア:

[(1, 278939128), (2, 139469564), (4, 69734782), (8, 34867391), (13, 21456856), (17, 16408184), (26, 10728428), (34, 8204092), (52, 5364214), (68, 4102046), (104, 2682107), (136, 2051023), (221, 1262168), (442, 631084), (884, 315542), (1768, 157771)]