18980848

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{2153}}^1$

素因数の和:2209

約数の個数: 40

約数和(自身を含む): 40064400

約数和(自身を除く): 21083552

約数列:

[1, 2, 4, 8, 16, 19, 29, 38, 58, 76, 116, 152, 232, 304, 464, 551, 1102, 2153, 2204, 4306, 4408, 8612, 8816, 17224, 34448, 40907, 62437, 81814, 124874, 163628, 249748, 327256, 499496, 654512, 998992, 1186303, 2372606, 4745212, 9490424, 18980848]

約数ペア:

[(1, 18980848), (2, 9490424), (4, 4745212), (8, 2372606), (16, 1186303), (19, 998992), (29, 654512), (38, 499496), (58, 327256), (76, 249748), (116, 163628), (152, 124874), (232, 81814), (304, 62437), (464, 40907), (551, 34448), (1102, 17224), (2153, 8816), (2204, 8612), (4306, 4408)]