640705196

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{1759}}^1\times {\mathrm{2221}}^1$

素因数の和:4025

約数の個数: 24

約数和(自身を含む): 1149751680

約数和(自身を除く): 509046484

約数列:

[1, 2, 4, 41, 82, 164, 1759, 2221, 3518, 4442, 7036, 8884, 72119, 91061, 144238, 182122, 288476, 364244, 3906739, 7813478, 15626956, 160176299, 320352598, 640705196]

約数ペア:

[(1, 640705196), (2, 320352598), (4, 160176299), (41, 15626956), (82, 7813478), (164, 3906739), (1759, 364244), (2221, 288476), (3518, 182122), (4442, 144238), (7036, 91061), (8884, 72119)]