19120000

素因数分解:

$2^7\times 5^4\times {\mathrm{239}}^1$

素因数の和:273

約数の個数: 80

約数和(自身を含む): 47797200

約数和(自身を除く): 28677200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 239, 250, 320, 400, 478, 500, 625, 640, 800, 956, 1000, 1195, 1250, 1600, 1912, 2000, 2390, 2500, 3200, 3824, 4000, 4780, 5000, 5975, 7648, 8000, 9560, 10000, 11950, 15296, 16000, 19120, 20000, 23900, 29875, 30592, 38240, 40000, 47800, 59750, 76480, 80000, 95600, 119500, 149375, 152960, 191200, 239000, 298750, 382400, 478000, 597500, 764800, 956000, 1195000, 1912000, 2390000, 3824000, 4780000, 9560000, 19120000]

約数ペア:

[(1, 19120000), (2, 9560000), (4, 4780000), (5, 3824000), (8, 2390000), (10, 1912000), (16, 1195000), (20, 956000), (25, 764800), (32, 597500), (40, 478000), (50, 382400), (64, 298750), (80, 239000), (100, 191200), (125, 152960), (128, 149375), (160, 119500), (200, 95600), (239, 80000), (250, 76480), (320, 59750), (400, 47800), (478, 40000), (500, 38240), (625, 30592), (640, 29875), (800, 23900), (956, 20000), (1000, 19120), (1195, 16000), (1250, 15296), (1600, 11950), (1912, 10000), (2000, 9560), (2390, 8000), (2500, 7648), (3200, 5975), (3824, 5000), (4000, 4780)]