20194504840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{243073}}^1$

素因数の和:243182

約数の個数: 64

約数和(自身を含む): 47603612160

約数和(自身を除く): 27409107320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 67, 124, 134, 155, 248, 268, 310, 335, 536, 620, 670, 1240, 1340, 2077, 2680, 4154, 8308, 10385, 16616, 20770, 41540, 83080, 243073, 486146, 972292, 1215365, 1944584, 2430730, 4861460, 7535263, 9722920, 15070526, 16285891, 30141052, 32571782, 37676315, 60282104, 65143564, 75352630, 81429455, 130287128, 150705260, 162858910, 301410520, 325717820, 504862621, 651435640, 1009725242, 2019450484, 2524313105, 4038900968, 5048626210, 10097252420, 20194504840]

約数ペア:

[(1, 20194504840), (2, 10097252420), (4, 5048626210), (5, 4038900968), (8, 2524313105), (10, 2019450484), (20, 1009725242), (31, 651435640), (40, 504862621), (62, 325717820), (67, 301410520), (124, 162858910), (134, 150705260), (155, 130287128), (248, 81429455), (268, 75352630), (310, 65143564), (335, 60282104), (536, 37676315), (620, 32571782), (670, 30141052), (1240, 16285891), (1340, 15070526), (2077, 9722920), (2680, 7535263), (4154, 4861460), (8308, 2430730), (10385, 1944584), (16616, 1215365), (20770, 972292), (41540, 486146), (83080, 243073)]