78544431

素因数分解:

$3^3\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2647}}^1$

素因数の和:2820

約数の個数: 32

約数和(自身を含む): 133882880

約数和(自身を除く): 55338449

約数列:

[1, 3, 7, 9, 21, 27, 63, 157, 189, 471, 1099, 1413, 2647, 3297, 4239, 7941, 9891, 18529, 23823, 29673, 55587, 71469, 166761, 415579, 500283, 1246737, 2909053, 3740211, 8727159, 11220633, 26181477, 78544431]

約数ペア:

[(1, 78544431), (3, 26181477), (7, 11220633), (9, 8727159), (21, 3740211), (27, 2909053), (63, 1246737), (157, 500283), (189, 415579), (471, 166761), (1099, 71469), (1413, 55587), (2647, 29673), (3297, 23823), (4239, 18529), (7941, 9891)]