641279040

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{667999}}^1$

素因数の和:668019

約数の個数: 56

約数和(自身を含む): 2036064000

約数和(自身を除く): 1394784960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 160, 192, 240, 320, 480, 960, 667999, 1335998, 2003997, 2671996, 3339995, 4007994, 5343992, 6679990, 8015988, 10019985, 10687984, 13359980, 16031976, 20039970, 21375968, 26719960, 32063952, 40079940, 42751936, 53439920, 64127904, 80159880, 106879840, 128255808, 160319760, 213759680, 320639520, 641279040]

約数ペア:

[(1, 641279040), (2, 320639520), (3, 213759680), (4, 160319760), (5, 128255808), (6, 106879840), (8, 80159880), (10, 64127904), (12, 53439920), (15, 42751936), (16, 40079940), (20, 32063952), (24, 26719960), (30, 21375968), (32, 20039970), (40, 16031976), (48, 13359980), (60, 10687984), (64, 10019985), (80, 8015988), (96, 6679990), (120, 5343992), (160, 4007994), (192, 3339995), (240, 2671996), (320, 2003997), (480, 1335998), (960, 667999)]