131686400

素因数分解:

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

素因数の和:679

約数の個数: 84

約数和(自身を含む): 327070212

約数和(自身を除く): 195383812

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, 643, 800, 1024, 1280, 1286, 1600, 2048, 2560, 2572, 3200, 3215, 4096, 5120, 5144, 6400, 6430, 8192, 10240, 10288, 12800, 12860, 16075, 20480, 20576, 25600, 25720, 32150, 40960, 41152, 51200, 51440, 64300, 82304, 102400, 102880, 128600, 164608, 204800, 205760, 257200, 329216, 411520, 514400, 658432, 823040, 1028800, 1316864, 1646080, 2057600, 2633728, 3292160, 4115200, 5267456, 6584320, 8230400, 13168640, 16460800, 26337280, 32921600, 65843200, 131686400]

約数ペア:

[(1, 131686400), (2, 65843200), (4, 32921600), (5, 26337280), (8, 16460800), (10, 13168640), (16, 8230400), (20, 6584320), (25, 5267456), (32, 4115200), (40, 3292160), (50, 2633728), (64, 2057600), (80, 1646080), (100, 1316864), (128, 1028800), (160, 823040), (200, 658432), (256, 514400), (320, 411520), (400, 329216), (512, 257200), (640, 205760), (643, 204800), (800, 164608), (1024, 128600), (1280, 102880), (1286, 102400), (1600, 82304), (2048, 64300), (2560, 51440), (2572, 51200), (3200, 41152), (3215, 40960), (4096, 32150), (5120, 25720), (5144, 25600), (6400, 20576), (6430, 20480), (8192, 16075), (10240, 12860), (10288, 12800)]