666651987

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:540

約数の個数: 48

約数和(自身を含む): 1028708928

約数和(自身を除く): 362056941

約数列:

[1, 3, 9, 23, 69, 73, 157, 207, 219, 281, 471, 657, 843, 1413, 1679, 2529, 3611, 5037, 6463, 10833, 11461, 15111, 19389, 20513, 32499, 34383, 44117, 58167, 61539, 103149, 132351, 184617, 263603, 397053, 471799, 790809, 1014691, 1415397, 2372427, 3044073, 3220541, 4246191, 9132219, 9661623, 28984869, 74072443, 222217329, 666651987]

約数ペア:

[(1, 666651987), (3, 222217329), (9, 74072443), (23, 28984869), (69, 9661623), (73, 9132219), (157, 4246191), (207, 3220541), (219, 3044073), (281, 2372427), (471, 1415397), (657, 1014691), (843, 790809), (1413, 471799), (1679, 397053), (2529, 263603), (3611, 184617), (5037, 132351), (6463, 103149), (10833, 61539), (11461, 58167), (15111, 44117), (19389, 34383), (20513, 32499)]