19983117

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:226

約数の個数: 64

約数和(自身を含む): 36403200

約数和(自身を除く): 16420083

約数列:

[1, 3, 7, 11, 19, 21, 29, 33, 57, 77, 87, 133, 157, 203, 209, 231, 319, 399, 471, 551, 609, 627, 957, 1099, 1463, 1653, 1727, 2233, 2983, 3297, 3857, 4389, 4553, 5181, 6061, 6699, 8949, 11571, 12089, 13659, 18183, 20881, 31871, 32813, 36267, 42427, 50083, 62643, 86507, 95613, 98439, 127281, 150249, 229691, 259521, 350581, 605549, 689073, 951577, 1051743, 1816647, 2854731, 6661039, 19983117]

約数ペア:

[(1, 19983117), (3, 6661039), (7, 2854731), (11, 1816647), (19, 1051743), (21, 951577), (29, 689073), (33, 605549), (57, 350581), (77, 259521), (87, 229691), (133, 150249), (157, 127281), (203, 98439), (209, 95613), (231, 86507), (319, 62643), (399, 50083), (471, 42427), (551, 36267), (609, 32813), (627, 31871), (957, 20881), (1099, 18183), (1463, 13659), (1653, 12089), (1727, 11571), (2233, 8949), (2983, 6699), (3297, 6061), (3857, 5181), (4389, 4553)]