51200000

素因数分解:

$2^{14}\times 5^5$

素因数の和:53

約数の個数: 90

約数和(自身を含む): 127987902

約数和(自身を除く): 76787902

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 320, 400, 500, 512, 625, 640, 800, 1000, 1024, 1250, 1280, 1600, 2000, 2048, 2500, 2560, 3125, 3200, 4000, 4096, 5000, 5120, 6250, 6400, 8000, 8192, 10000, 10240, 12500, 12800, 16000, 16384, 20000, 20480, 25000, 25600, 32000, 40000, 40960, 50000, 51200, 64000, 80000, 81920, 100000, 102400, 128000, 160000, 200000, 204800, 256000, 320000, 400000, 409600, 512000, 640000, 800000, 1024000, 1280000, 1600000, 2048000, 2560000, 3200000, 5120000, 6400000, 10240000, 12800000, 25600000, 51200000]

約数ペア:

[(1, 51200000), (2, 25600000), (4, 12800000), (5, 10240000), (8, 6400000), (10, 5120000), (16, 3200000), (20, 2560000), (25, 2048000), (32, 1600000), (40, 1280000), (50, 1024000), (64, 800000), (80, 640000), (100, 512000), (125, 409600), (128, 400000), (160, 320000), (200, 256000), (250, 204800), (256, 200000), (320, 160000), (400, 128000), (500, 102400), (512, 100000), (625, 81920), (640, 80000), (800, 64000), (1000, 51200), (1024, 50000), (1250, 40960), (1280, 40000), (1600, 32000), (2000, 25600), (2048, 25000), (2500, 20480), (2560, 20000), (3125, 16384), (3200, 16000), (4000, 12800), (4096, 12500), (5000, 10240), (5120, 10000), (6250, 8192), (6400, 8000)]