21365386

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2591}}^1$

素因数の和:2650

約数の個数: 32

約数和(自身を含む): 39813120

約数和(自身を除く): 18447734

約数列:

[1, 2, 7, 14, 19, 31, 38, 62, 133, 217, 266, 434, 589, 1178, 2591, 4123, 5182, 8246, 18137, 36274, 49229, 80321, 98458, 160642, 344603, 562247, 689206, 1124494, 1526099, 3052198, 10682693, 21365386]

約数ペア:

[(1, 21365386), (2, 10682693), (7, 3052198), (14, 1526099), (19, 1124494), (31, 689206), (38, 562247), (62, 344603), (133, 160642), (217, 98458), (266, 80321), (434, 49229), (589, 36274), (1178, 18137), (2591, 8246), (4123, 5182)]