81247761

素因数分解:

$3^2\times 7^1\times {\mathrm{599}}^1\times {\mathrm{2153}}^1$

素因数の和:2765

約数の個数: 24

約数和(自身を含む): 134409600

約数和(自身を除く): 53161839

約数列:

[1, 3, 7, 9, 21, 63, 599, 1797, 2153, 4193, 5391, 6459, 12579, 15071, 19377, 37737, 45213, 135639, 1289647, 3868941, 9027529, 11606823, 27082587, 81247761]

約数ペア:

[(1, 81247761), (3, 27082587), (7, 11606823), (9, 9027529), (21, 3868941), (63, 1289647), (599, 135639), (1797, 45213), (2153, 37737), (4193, 19377), (5391, 15071), (6459, 12579)]