205654480

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{7121}}^1$

素因数の和:7172

約数の個数: 60

約数和(自身を含む): 504707652

約数和(自身を除く): 299053172

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 722, 760, 1444, 1520, 1805, 2888, 3610, 5776, 7121, 7220, 14242, 14440, 28484, 28880, 35605, 56968, 71210, 113936, 135299, 142420, 270598, 284840, 541196, 569680, 676495, 1082392, 1352990, 2164784, 2570681, 2705980, 5141362, 5411960, 10282724, 10823920, 12853405, 20565448, 25706810, 41130896, 51413620, 102827240, 205654480]

約数ペア:

[(1, 205654480), (2, 102827240), (4, 51413620), (5, 41130896), (8, 25706810), (10, 20565448), (16, 12853405), (19, 10823920), (20, 10282724), (38, 5411960), (40, 5141362), (76, 2705980), (80, 2570681), (95, 2164784), (152, 1352990), (190, 1082392), (304, 676495), (361, 569680), (380, 541196), (722, 284840), (760, 270598), (1444, 142420), (1520, 135299), (1805, 113936), (2888, 71210), (3610, 56968), (5776, 35605), (7121, 28880), (7220, 28484), (14242, 14440)]