81157573

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:290

約数の個数: 32

約数和(自身を含む): 100800000

約数和(自身を除く): 19642427

約数列:

[1, 7, 29, 41, 49, 199, 203, 287, 343, 1189, 1393, 1421, 2009, 5771, 8159, 8323, 9751, 9947, 14063, 40397, 57113, 58261, 68257, 236611, 282779, 399791, 407827, 1656277, 1979453, 2798537, 11593939, 81157573]

約数ペア:

[(1, 81157573), (7, 11593939), (29, 2798537), (41, 1979453), (49, 1656277), (199, 407827), (203, 399791), (287, 282779), (343, 236611), (1189, 68257), (1393, 58261), (1421, 57113), (2009, 40397), (5771, 14063), (8159, 9947), (8323, 9751)]