20160294400

素因数分解:

$2^9\times 5^2\times {\mathrm{79}}^1\times {\mathrm{19937}}^1$

素因数の和:20044

約数の個数: 120

約数和(自身を含む): 50583503520

約数和(自身を除く): 30423209120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 79, 80, 100, 128, 158, 160, 200, 256, 316, 320, 395, 400, 512, 632, 640, 790, 800, 1264, 1280, 1580, 1600, 1975, 2528, 2560, 3160, 3200, 3950, 5056, 6320, 6400, 7900, 10112, 12640, 12800, 15800, 19937, 20224, 25280, 31600, 39874, 40448, 50560, 63200, 79748, 99685, 101120, 126400, 159496, 199370, 202240, 252800, 318992, 398740, 498425, 505600, 637984, 797480, 996850, 1011200, 1275968, 1575023, 1594960, 1993700, 2551936, 3150046, 3189920, 3987400, 5103872, 6300092, 6379840, 7875115, 7974800, 10207744, 12600184, 12759680, 15750230, 15949600, 25200368, 25519360, 31500460, 31899200, 39375575, 50400736, 51038720, 63000920, 63798400, 78751150, 100801472, 126001840, 127596800, 157502300, 201602944, 252003680, 255193600, 315004600, 403205888, 504007360, 630009200, 806411776, 1008014720, 1260018400, 2016029440, 2520036800, 4032058880, 5040073600, 10080147200, 20160294400]

約数ペア:

[(1, 20160294400), (2, 10080147200), (4, 5040073600), (5, 4032058880), (8, 2520036800), (10, 2016029440), (16, 1260018400), (20, 1008014720), (25, 806411776), (32, 630009200), (40, 504007360), (50, 403205888), (64, 315004600), (79, 255193600), (80, 252003680), (100, 201602944), (128, 157502300), (158, 127596800), (160, 126001840), (200, 100801472), (256, 78751150), (316, 63798400), (320, 63000920), (395, 51038720), (400, 50400736), (512, 39375575), (632, 31899200), (640, 31500460), (790, 25519360), (800, 25200368), (1264, 15949600), (1280, 15750230), (1580, 12759680), (1600, 12600184), (1975, 10207744), (2528, 7974800), (2560, 7875115), (3160, 6379840), (3200, 6300092), (3950, 5103872), (5056, 3987400), (6320, 3189920), (6400, 3150046), (7900, 2551936), (10112, 1993700), (12640, 1594960), (12800, 1575023), (15800, 1275968), (19937, 1011200), (20224, 996850), (25280, 797480), (31600, 637984), (39874, 505600), (40448, 498425), (50560, 398740), (63200, 318992), (79748, 252800), (99685, 202240), (101120, 199370), (126400, 159496)]