78807920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{57947}}^1$

素因数の和:57977

約数の個数: 40

約数和(自身を含む): 194009904

約数和(自身を除く): 115201984

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 57947, 115894, 231788, 289735, 463576, 579470, 927152, 985099, 1158940, 1970198, 2317880, 3940396, 4635760, 4925495, 7880792, 9850990, 15761584, 19701980, 39403960, 78807920]

約数ペア:

[(1, 78807920), (2, 39403960), (4, 19701980), (5, 15761584), (8, 9850990), (10, 7880792), (16, 4925495), (17, 4635760), (20, 3940396), (34, 2317880), (40, 1970198), (68, 1158940), (80, 985099), (85, 927152), (136, 579470), (170, 463576), (272, 289735), (340, 231788), (680, 115894), (1360, 57947)]