19992800

素因数分解:

$2^5\times 5^2\times {\mathrm{67}}^1\times {\mathrm{373}}^1$

素因数の和:460

約数の個数: 72

約数和(自身を含む): 49668696

約数和(自身を除く): 29675896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 67, 80, 100, 134, 160, 200, 268, 335, 373, 400, 536, 670, 746, 800, 1072, 1340, 1492, 1675, 1865, 2144, 2680, 2984, 3350, 3730, 5360, 5968, 6700, 7460, 9325, 10720, 11936, 13400, 14920, 18650, 24991, 26800, 29840, 37300, 49982, 53600, 59680, 74600, 99964, 124955, 149200, 199928, 249910, 298400, 399856, 499820, 624775, 799712, 999640, 1249550, 1999280, 2499100, 3998560, 4998200, 9996400, 19992800]

約数ペア:

[(1, 19992800), (2, 9996400), (4, 4998200), (5, 3998560), (8, 2499100), (10, 1999280), (16, 1249550), (20, 999640), (25, 799712), (32, 624775), (40, 499820), (50, 399856), (67, 298400), (80, 249910), (100, 199928), (134, 149200), (160, 124955), (200, 99964), (268, 74600), (335, 59680), (373, 53600), (400, 49982), (536, 37300), (670, 29840), (746, 26800), (800, 24991), (1072, 18650), (1340, 14920), (1492, 13400), (1675, 11936), (1865, 10720), (2144, 9325), (2680, 7460), (2984, 6700), (3350, 5968), (3730, 5360)]