213990400

素因数分解:

$2^{10}\times 5^2\times {\mathrm{13}}^1\times {\mathrm{643}}^1$

素因数の和:686

約数の個数: 132

約数和(自身を含む): 572128312

約数和(自身を除く): 358137912

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 128, 130, 160, 200, 208, 256, 260, 320, 325, 400, 416, 512, 520, 640, 643, 650, 800, 832, 1024, 1040, 1280, 1286, 1300, 1600, 1664, 2080, 2560, 2572, 2600, 3200, 3215, 3328, 4160, 5120, 5144, 5200, 6400, 6430, 6656, 8320, 8359, 10288, 10400, 12800, 12860, 13312, 16075, 16640, 16718, 20576, 20800, 25600, 25720, 32150, 33280, 33436, 41152, 41600, 41795, 51440, 64300, 66560, 66872, 82304, 83200, 83590, 102880, 128600, 133744, 164608, 166400, 167180, 205760, 208975, 257200, 267488, 329216, 332800, 334360, 411520, 417950, 514400, 534976, 658432, 668720, 823040, 835900, 1028800, 1069952, 1337440, 1646080, 1671800, 2057600, 2139904, 2674880, 3292160, 3343600, 4115200, 4279808, 5349760, 6687200, 8230400, 8559616, 10699520, 13374400, 16460800, 21399040, 26748800, 42798080, 53497600, 106995200, 213990400]

約数ペア:

[(1, 213990400), (2, 106995200), (4, 53497600), (5, 42798080), (8, 26748800), (10, 21399040), (13, 16460800), (16, 13374400), (20, 10699520), (25, 8559616), (26, 8230400), (32, 6687200), (40, 5349760), (50, 4279808), (52, 4115200), (64, 3343600), (65, 3292160), (80, 2674880), (100, 2139904), (104, 2057600), (128, 1671800), (130, 1646080), (160, 1337440), (200, 1069952), (208, 1028800), (256, 835900), (260, 823040), (320, 668720), (325, 658432), (400, 534976), (416, 514400), (512, 417950), (520, 411520), (640, 334360), (643, 332800), (650, 329216), (800, 267488), (832, 257200), (1024, 208975), (1040, 205760), (1280, 167180), (1286, 166400), (1300, 164608), (1600, 133744), (1664, 128600), (2080, 102880), (2560, 83590), (2572, 83200), (2600, 82304), (3200, 66872), (3215, 66560), (3328, 64300), (4160, 51440), (5120, 41795), (5144, 41600), (5200, 41152), (6400, 33436), (6430, 33280), (6656, 32150), (8320, 25720), (8359, 25600), (10288, 20800), (10400, 20576), (12800, 16718), (12860, 16640), (13312, 16075)]