318880480

素因数分解:

$2^5\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1999}}^1$

素因数の和:3011

約数の個数: 48

約数和(自身を含む): 754488000

約数和(自身を除く): 435607520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 997, 1994, 1999, 3988, 3998, 4985, 7976, 7996, 9970, 9995, 15952, 15992, 19940, 19990, 31904, 31984, 39880, 39980, 63968, 79760, 79960, 159520, 159920, 319840, 1993003, 3986006, 7972012, 9965015, 15944024, 19930030, 31888048, 39860060, 63776096, 79720120, 159440240, 318880480]

約数ペア:

[(1, 318880480), (2, 159440240), (4, 79720120), (5, 63776096), (8, 39860060), (10, 31888048), (16, 19930030), (20, 15944024), (32, 9965015), (40, 7972012), (80, 3986006), (160, 1993003), (997, 319840), (1994, 159920), (1999, 159520), (3988, 79960), (3998, 79760), (4985, 63968), (7976, 39980), (7996, 39880), (9970, 31984), (9995, 31904), (15952, 19990), (15992, 19940)]