20917400

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:313

約数の個数: 96

約数和(自身を含む): 56663040

約数和(自身を除く): 35745640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 50, 56, 67, 70, 100, 134, 140, 175, 200, 223, 268, 280, 335, 350, 446, 469, 536, 670, 700, 892, 938, 1115, 1340, 1400, 1561, 1675, 1784, 1876, 2230, 2345, 2680, 3122, 3350, 3752, 4460, 4690, 5575, 6244, 6700, 7805, 8920, 9380, 11150, 11725, 12488, 13400, 14941, 15610, 18760, 22300, 23450, 29882, 31220, 39025, 44600, 46900, 59764, 62440, 74705, 78050, 93800, 104587, 119528, 149410, 156100, 209174, 298820, 312200, 373525, 418348, 522935, 597640, 747050, 836696, 1045870, 1494100, 2091740, 2614675, 2988200, 4183480, 5229350, 10458700, 20917400]

約数ペア:

[(1, 20917400), (2, 10458700), (4, 5229350), (5, 4183480), (7, 2988200), (8, 2614675), (10, 2091740), (14, 1494100), (20, 1045870), (25, 836696), (28, 747050), (35, 597640), (40, 522935), (50, 418348), (56, 373525), (67, 312200), (70, 298820), (100, 209174), (134, 156100), (140, 149410), (175, 119528), (200, 104587), (223, 93800), (268, 78050), (280, 74705), (335, 62440), (350, 59764), (446, 46900), (469, 44600), (536, 39025), (670, 31220), (700, 29882), (892, 23450), (938, 22300), (1115, 18760), (1340, 15610), (1400, 14941), (1561, 13400), (1675, 12488), (1784, 11725), (1876, 11150), (2230, 9380), (2345, 8920), (2680, 7805), (3122, 6700), (3350, 6244), (3752, 5575), (4460, 4690)]