21887859

素因数分解:

$3^1\times 7^3\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:352

約数の個数: 32

約数和(自身を含む): 34560000

約数和(自身を除く): 12672141

約数列:

[1, 3, 7, 21, 49, 89, 147, 239, 267, 343, 623, 717, 1029, 1673, 1869, 4361, 5019, 11711, 13083, 21271, 30527, 35133, 63813, 81977, 91581, 148897, 245931, 446691, 1042279, 3126837, 7295953, 21887859]

約数ペア:

[(1, 21887859), (3, 7295953), (7, 3126837), (21, 1042279), (49, 446691), (89, 245931), (147, 148897), (239, 91581), (267, 81977), (343, 63813), (623, 35133), (717, 30527), (1029, 21271), (1673, 13083), (1869, 11711), (4361, 5019)]