21649563

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 35782656

約数和(自身を除く): 14133093

約数列:

[1, 3, 9, 13, 31, 39, 47, 93, 117, 127, 141, 279, 381, 403, 423, 611, 1143, 1209, 1457, 1651, 1833, 3627, 3937, 4371, 4953, 5499, 5969, 11811, 13113, 14859, 17907, 18941, 35433, 51181, 53721, 56823, 77597, 153543, 170469, 185039, 232791, 460629, 555117, 698373, 1665351, 2405507, 7216521, 21649563]

約数ペア:

[(1, 21649563), (3, 7216521), (9, 2405507), (13, 1665351), (31, 698373), (39, 555117), (47, 460629), (93, 232791), (117, 185039), (127, 170469), (141, 153543), (279, 77597), (381, 56823), (403, 53721), (423, 51181), (611, 35433), (1143, 18941), (1209, 17907), (1457, 14859), (1651, 13113), (1833, 11811), (3627, 5969), (3937, 5499), (4371, 4953)]