20448400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:201

約数の個数: 120

約数和(自身を含む): 57506240

約数和(自身を除く): 37057840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 67, 70, 80, 100, 109, 112, 134, 140, 175, 200, 218, 268, 280, 335, 350, 400, 436, 469, 536, 545, 560, 670, 700, 763, 872, 938, 1072, 1090, 1340, 1400, 1526, 1675, 1744, 1876, 2180, 2345, 2680, 2725, 2800, 3052, 3350, 3752, 3815, 4360, 4690, 5360, 5450, 6104, 6700, 7303, 7504, 7630, 8720, 9380, 10900, 11725, 12208, 13400, 14606, 15260, 18760, 19075, 21800, 23450, 26800, 29212, 30520, 36515, 37520, 38150, 43600, 46900, 51121, 58424, 61040, 73030, 76300, 93800, 102242, 116848, 146060, 152600, 182575, 187600, 204484, 255605, 292120, 305200, 365150, 408968, 511210, 584240, 730300, 817936, 1022420, 1278025, 1460600, 2044840, 2556050, 2921200, 4089680, 5112100, 10224200, 20448400]

約数ペア:

[(1, 20448400), (2, 10224200), (4, 5112100), (5, 4089680), (7, 2921200), (8, 2556050), (10, 2044840), (14, 1460600), (16, 1278025), (20, 1022420), (25, 817936), (28, 730300), (35, 584240), (40, 511210), (50, 408968), (56, 365150), (67, 305200), (70, 292120), (80, 255605), (100, 204484), (109, 187600), (112, 182575), (134, 152600), (140, 146060), (175, 116848), (200, 102242), (218, 93800), (268, 76300), (280, 73030), (335, 61040), (350, 58424), (400, 51121), (436, 46900), (469, 43600), (536, 38150), (545, 37520), (560, 36515), (670, 30520), (700, 29212), (763, 26800), (872, 23450), (938, 21800), (1072, 19075), (1090, 18760), (1340, 15260), (1400, 14606), (1526, 13400), (1675, 12208), (1744, 11725), (1876, 10900), (2180, 9380), (2345, 8720), (2680, 7630), (2725, 7504), (2800, 7303), (3052, 6700), (3350, 6104), (3752, 5450), (3815, 5360), (4360, 4690)]