16880000

素因数分解:

$2^7\times 5^4\times {\mathrm{211}}^1$

素因数の和:245

約数の個数: 80

約数和(自身を含む): 42220860

約数和(自身を除く): 25340860

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 211, 250, 320, 400, 422, 500, 625, 640, 800, 844, 1000, 1055, 1250, 1600, 1688, 2000, 2110, 2500, 3200, 3376, 4000, 4220, 5000, 5275, 6752, 8000, 8440, 10000, 10550, 13504, 16000, 16880, 20000, 21100, 26375, 27008, 33760, 40000, 42200, 52750, 67520, 80000, 84400, 105500, 131875, 135040, 168800, 211000, 263750, 337600, 422000, 527500, 675200, 844000, 1055000, 1688000, 2110000, 3376000, 4220000, 8440000, 16880000]

約数ペア:

[(1, 16880000), (2, 8440000), (4, 4220000), (5, 3376000), (8, 2110000), (10, 1688000), (16, 1055000), (20, 844000), (25, 675200), (32, 527500), (40, 422000), (50, 337600), (64, 263750), (80, 211000), (100, 168800), (125, 135040), (128, 131875), (160, 105500), (200, 84400), (211, 80000), (250, 67520), (320, 52750), (400, 42200), (422, 40000), (500, 33760), (625, 27008), (640, 26375), (800, 21100), (844, 20000), (1000, 16880), (1055, 16000), (1250, 13504), (1600, 10550), (1688, 10000), (2000, 8440), (2110, 8000), (2500, 6752), (3200, 5275), (3376, 5000), (4000, 4220)]