208055920

素因数分解:

$2^4\times 5^1\times {\mathrm{1301}}^1\times {\mathrm{1999}}^1$

素因数の和:3313

約数の個数: 40

約数和(自身を含む): 484344000

約数和(自身を除く): 276288080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1301, 1999, 2602, 3998, 5204, 6505, 7996, 9995, 10408, 13010, 15992, 19990, 20816, 26020, 31984, 39980, 52040, 79960, 104080, 159920, 2600699, 5201398, 10402796, 13003495, 20805592, 26006990, 41611184, 52013980, 104027960, 208055920]

約数ペア:

[(1, 208055920), (2, 104027960), (4, 52013980), (5, 41611184), (8, 26006990), (10, 20805592), (16, 13003495), (20, 10402796), (40, 5201398), (80, 2600699), (1301, 159920), (1999, 104080), (2602, 79960), (3998, 52040), (5204, 39980), (6505, 31984), (7996, 26020), (9995, 20816), (10408, 19990), (13010, 15992)]