247693719

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{5779}}^1$

素因数の和:5959

約数の個数: 32

約数和(自身を含む): 409131520

約数和(自身を除く): 161437801

約数列:

[1, 3, 7, 13, 21, 39, 91, 157, 273, 471, 1099, 2041, 3297, 5779, 6123, 14287, 17337, 40453, 42861, 75127, 121359, 225381, 525889, 907303, 1577667, 2721909, 6351121, 11794939, 19053363, 35384817, 82564573, 247693719]

約数ペア:

[(1, 247693719), (3, 82564573), (7, 35384817), (13, 19053363), (21, 11794939), (39, 6351121), (91, 2721909), (157, 1577667), (273, 907303), (471, 525889), (1099, 225381), (2041, 121359), (3297, 75127), (5779, 42861), (6123, 40453), (14287, 17337)]