7981900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{4201}}^1$

素因数の和:4234

約数の個数: 36

約数和(自身を含む): 18236680

約数和(自身を除く): 10254780

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 4201, 8402, 16804, 21005, 42010, 79819, 84020, 105025, 159638, 210050, 319276, 399095, 420100, 798190, 1596380, 1995475, 3990950, 7981900]

約数ペア:

[(1, 7981900), (2, 3990950), (4, 1995475), (5, 1596380), (10, 798190), (19, 420100), (20, 399095), (25, 319276), (38, 210050), (50, 159638), (76, 105025), (95, 84020), (100, 79819), (190, 42010), (380, 21005), (475, 16804), (950, 8402), (1900, 4201)]