165990400

素因数分解:

$2^{12}\times 5^2\times {\mathrm{1621}}^1$

素因数の和:1655

約数の個数: 78

約数和(自身を含む): 411859862

約数和(自身を除く): 245869462

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1024, 1280, 1600, 1621, 2048, 2560, 3200, 3242, 4096, 5120, 6400, 6484, 8105, 10240, 12800, 12968, 16210, 20480, 25600, 25936, 32420, 40525, 51200, 51872, 64840, 81050, 102400, 103744, 129680, 162100, 207488, 259360, 324200, 414976, 518720, 648400, 829952, 1037440, 1296800, 1659904, 2074880, 2593600, 3319808, 4149760, 5187200, 6639616, 8299520, 10374400, 16599040, 20748800, 33198080, 41497600, 82995200, 165990400]

約数ペア:

[(1, 165990400), (2, 82995200), (4, 41497600), (5, 33198080), (8, 20748800), (10, 16599040), (16, 10374400), (20, 8299520), (25, 6639616), (32, 5187200), (40, 4149760), (50, 3319808), (64, 2593600), (80, 2074880), (100, 1659904), (128, 1296800), (160, 1037440), (200, 829952), (256, 648400), (320, 518720), (400, 414976), (512, 324200), (640, 259360), (800, 207488), (1024, 162100), (1280, 129680), (1600, 103744), (1621, 102400), (2048, 81050), (2560, 64840), (3200, 51872), (3242, 51200), (4096, 40525), (5120, 32420), (6400, 25936), (6484, 25600), (8105, 20480), (10240, 16210), (12800, 12968)]