1298240000

素因数分解:

$2^9\times 5^4\times {\mathrm{4057}}^1$

素因数の和:4095

約数の個数: 100

約数和(自身を含む): 3242191854

約数和(自身を除く): 1943951854

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, 1250, 1280, 1600, 2000, 2500, 2560, 3200, 4000, 4057, 5000, 6400, 8000, 8114, 10000, 12800, 16000, 16228, 20000, 20285, 32000, 32456, 40000, 40570, 64000, 64912, 80000, 81140, 101425, 129824, 160000, 162280, 202850, 259648, 320000, 324560, 405700, 507125, 519296, 649120, 811400, 1014250, 1038592, 1298240, 1622800, 2028500, 2077184, 2535625, 2596480, 3245600, 4057000, 5071250, 5192960, 6491200, 8114000, 10142500, 10385920, 12982400, 16228000, 20285000, 25964800, 32456000, 40570000, 51929600, 64912000, 81140000, 129824000, 162280000, 259648000, 324560000, 649120000, 1298240000]

約数ペア:

[(1, 1298240000), (2, 649120000), (4, 324560000), (5, 259648000), (8, 162280000), (10, 129824000), (16, 81140000), (20, 64912000), (25, 51929600), (32, 40570000), (40, 32456000), (50, 25964800), (64, 20285000), (80, 16228000), (100, 12982400), (125, 10385920), (128, 10142500), (160, 8114000), (200, 6491200), (250, 5192960), (256, 5071250), (320, 4057000), (400, 3245600), (500, 2596480), (512, 2535625), (625, 2077184), (640, 2028500), (800, 1622800), (1000, 1298240), (1250, 1038592), (1280, 1014250), (1600, 811400), (2000, 649120), (2500, 519296), (2560, 507125), (3200, 405700), (4000, 324560), (4057, 320000), (5000, 259648), (6400, 202850), (8000, 162280), (8114, 160000), (10000, 129824), (12800, 101425), (16000, 81140), (16228, 80000), (20000, 64912), (20285, 64000), (32000, 40570), (32456, 40000)]