81318100

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{337}}^1$

素因数の和:497

約数の個数: 72

約数和(自身を含む): 187765760

約数和(自身を除く): 106447660

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 127, 190, 254, 337, 380, 475, 508, 635, 674, 950, 1270, 1348, 1685, 1900, 2413, 2540, 3175, 3370, 4826, 6350, 6403, 6740, 8425, 9652, 12065, 12700, 12806, 16850, 24130, 25612, 32015, 33700, 42799, 48260, 60325, 64030, 85598, 120650, 128060, 160075, 171196, 213995, 241300, 320150, 427990, 640300, 813181, 855980, 1069975, 1626362, 2139950, 3252724, 4065905, 4279900, 8131810, 16263620, 20329525, 40659050, 81318100]

約数ペア:

[(1, 81318100), (2, 40659050), (4, 20329525), (5, 16263620), (10, 8131810), (19, 4279900), (20, 4065905), (25, 3252724), (38, 2139950), (50, 1626362), (76, 1069975), (95, 855980), (100, 813181), (127, 640300), (190, 427990), (254, 320150), (337, 241300), (380, 213995), (475, 171196), (508, 160075), (635, 128060), (674, 120650), (950, 85598), (1270, 64030), (1348, 60325), (1685, 48260), (1900, 42799), (2413, 33700), (2540, 32015), (3175, 25612), (3370, 24130), (4826, 16850), (6350, 12806), (6403, 12700), (6740, 12065), (8425, 9652)]