19628960

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9437}}^1$

素因数の和:9465

約数の個数: 48

約数和(自身を含む): 49945896

約数和(自身を除く): 30316936

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9437, 18874, 37748, 47185, 75496, 94370, 122681, 150992, 188740, 245362, 301984, 377480, 490724, 613405, 754960, 981448, 1226810, 1509920, 1962896, 2453620, 3925792, 4907240, 9814480, 19628960]

約数ペア:

[(1, 19628960), (2, 9814480), (4, 4907240), (5, 3925792), (8, 2453620), (10, 1962896), (13, 1509920), (16, 1226810), (20, 981448), (26, 754960), (32, 613405), (40, 490724), (52, 377480), (65, 301984), (80, 245362), (104, 188740), (130, 150992), (160, 122681), (208, 94370), (260, 75496), (416, 47185), (520, 37748), (1040, 18874), (2080, 9437)]