206136880

素因数分解:

$2^4\times 5^1\times {\mathrm{1289}}^1\times {\mathrm{1999}}^1$

素因数の和:3301

約数の個数: 40

約数和(自身を含む): 479880000

約数和(自身を除く): 273743120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1289, 1999, 2578, 3998, 5156, 6445, 7996, 9995, 10312, 12890, 15992, 19990, 20624, 25780, 31984, 39980, 51560, 79960, 103120, 159920, 2576711, 5153422, 10306844, 12883555, 20613688, 25767110, 41227376, 51534220, 103068440, 206136880]

約数ペア:

[(1, 206136880), (2, 103068440), (4, 51534220), (5, 41227376), (8, 25767110), (10, 20613688), (16, 12883555), (20, 10306844), (40, 5153422), (80, 2576711), (1289, 159920), (1999, 103120), (2578, 79960), (3998, 51560), (5156, 39980), (6445, 31984), (7996, 25780), (9995, 20624), (10312, 19990), (12890, 15992)]