19551357

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{131}}^1$

素因数の和:270

約数の個数: 48

約数和(自身を含む): 34265088

約数和(自身を除く): 14713731

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 103, 131, 161, 207, 309, 393, 483, 721, 917, 927, 1179, 1449, 2163, 2369, 2751, 3013, 6489, 7107, 8253, 9039, 13493, 16583, 21091, 21321, 27117, 40479, 49749, 63273, 94451, 121437, 149247, 189819, 283353, 310339, 850059, 931017, 2172373, 2793051, 6517119, 19551357]

約数ペア:

[(1, 19551357), (3, 6517119), (7, 2793051), (9, 2172373), (21, 931017), (23, 850059), (63, 310339), (69, 283353), (103, 189819), (131, 149247), (161, 121437), (207, 94451), (309, 63273), (393, 49749), (483, 40479), (721, 27117), (917, 21321), (927, 21091), (1179, 16583), (1449, 13493), (2163, 9039), (2369, 8253), (2751, 7107), (3013, 6489)]