178522820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{997}}^1\times {\mathrm{1279}}^1$

素因数の和:2292

約数の個数: 48

約数和(自身を含む): 429219840

約数和(自身を除く): 250697020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 997, 1279, 1994, 2558, 3988, 4985, 5116, 6395, 6979, 8953, 9970, 12790, 13958, 17906, 19940, 25580, 27916, 34895, 35812, 44765, 69790, 89530, 139580, 179060, 1275163, 2550326, 5100652, 6375815, 8926141, 12751630, 17852282, 25503260, 35704564, 44630705, 89261410, 178522820]

約数ペア:

[(1, 178522820), (2, 89261410), (4, 44630705), (5, 35704564), (7, 25503260), (10, 17852282), (14, 12751630), (20, 8926141), (28, 6375815), (35, 5100652), (70, 2550326), (140, 1275163), (997, 179060), (1279, 139580), (1994, 89530), (2558, 69790), (3988, 44765), (4985, 35812), (5116, 34895), (6395, 27916), (6979, 25580), (8953, 19940), (9970, 17906), (12790, 13958)]