20407968400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2685259}}^1$

素因数の和:2685296

約数の個数: 60

約数和(自身を含む): 51610697200

約数和(自身を除く): 31202728800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 3800, 7600, 2685259, 5370518, 10741036, 13426295, 21482072, 26852590, 42964144, 51019921, 53705180, 67131475, 102039842, 107410360, 134262950, 204079684, 214820720, 255099605, 268525900, 408159368, 510199210, 537051800, 816318736, 1020398420, 1074103600, 1275498025, 2040796840, 2550996050, 4081593680, 5101992100, 10203984200, 20407968400]

約数ペア:

[(1, 20407968400), (2, 10203984200), (4, 5101992100), (5, 4081593680), (8, 2550996050), (10, 2040796840), (16, 1275498025), (19, 1074103600), (20, 1020398420), (25, 816318736), (38, 537051800), (40, 510199210), (50, 408159368), (76, 268525900), (80, 255099605), (95, 214820720), (100, 204079684), (152, 134262950), (190, 107410360), (200, 102039842), (304, 67131475), (380, 53705180), (400, 51019921), (475, 42964144), (760, 26852590), (950, 21482072), (1520, 13426295), (1900, 10741036), (3800, 5370518), (7600, 2685259)]