21789801

素因数分解:

$3^2\times {\mathrm{11}}^3\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:163

約数の個数: 48

約数和(自身を含む): 36998208

約数和(自身を除く): 15208407

約数列:

[1, 3, 9, 11, 17, 33, 51, 99, 107, 121, 153, 187, 321, 363, 561, 963, 1089, 1177, 1331, 1683, 1819, 2057, 3531, 3993, 5457, 6171, 10593, 11979, 12947, 16371, 18513, 20009, 22627, 38841, 60027, 67881, 116523, 142417, 180081, 203643, 220099, 427251, 660297, 1281753, 1980891, 2421089, 7263267, 21789801]

約数ペア:

[(1, 21789801), (3, 7263267), (9, 2421089), (11, 1980891), (17, 1281753), (33, 660297), (51, 427251), (99, 220099), (107, 203643), (121, 180081), (153, 142417), (187, 116523), (321, 67881), (363, 60027), (561, 38841), (963, 22627), (1089, 20009), (1177, 18513), (1331, 16371), (1683, 12947), (1819, 11979), (2057, 10593), (3531, 6171), (3993, 5457)]