205122399920

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{479}}^1\times {\mathrm{49109}}^1$

素因数の和:49710

約数の個数: 80

約数和(自身を含む): 482299488000

約数和(自身を除く): 277177088080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 479, 545, 872, 958, 1090, 1744, 1916, 2180, 2395, 3832, 4360, 4790, 7664, 8720, 9580, 19160, 38320, 49109, 52211, 98218, 104422, 196436, 208844, 245545, 261055, 392872, 417688, 491090, 522110, 785744, 835376, 982180, 1044220, 1964360, 2088440, 3928720, 4176880, 5352881, 10705762, 21411524, 23523211, 26764405, 42823048, 47046422, 53528810, 85646096, 94092844, 107057620, 117616055, 188185688, 214115240, 235232110, 376371376, 428230480, 470464220, 940928440, 1881856880, 2564029999, 5128059998, 10256119996, 12820149995, 20512239992, 25640299990, 41024479984, 51280599980, 102561199960, 205122399920]

約数ペア:

[(1, 205122399920), (2, 102561199960), (4, 51280599980), (5, 41024479984), (8, 25640299990), (10, 20512239992), (16, 12820149995), (20, 10256119996), (40, 5128059998), (80, 2564029999), (109, 1881856880), (218, 940928440), (436, 470464220), (479, 428230480), (545, 376371376), (872, 235232110), (958, 214115240), (1090, 188185688), (1744, 117616055), (1916, 107057620), (2180, 94092844), (2395, 85646096), (3832, 53528810), (4360, 47046422), (4790, 42823048), (7664, 26764405), (8720, 23523211), (9580, 21411524), (19160, 10705762), (38320, 5352881), (49109, 4176880), (52211, 3928720), (98218, 2088440), (104422, 1964360), (196436, 1044220), (208844, 982180), (245545, 835376), (261055, 785744), (392872, 522110), (417688, 491090)]