20562920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:175

約数の個数: 128

約数和(自身を含む): 57507840

約数和(自身を除く): 36944920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 31, 35, 40, 46, 56, 62, 70, 92, 103, 115, 124, 140, 155, 161, 184, 206, 217, 230, 248, 280, 310, 322, 412, 434, 460, 515, 620, 644, 713, 721, 805, 824, 868, 920, 1030, 1085, 1240, 1288, 1426, 1442, 1610, 1736, 2060, 2170, 2369, 2852, 2884, 3193, 3220, 3565, 3605, 4120, 4340, 4738, 4991, 5704, 5768, 6386, 6440, 7130, 7210, 8680, 9476, 9982, 11845, 12772, 14260, 14420, 15965, 16583, 18952, 19964, 22351, 23690, 24955, 25544, 28520, 28840, 31930, 33166, 39928, 44702, 47380, 49910, 63860, 66332, 73439, 82915, 89404, 94760, 99820, 111755, 127720, 132664, 146878, 165830, 178808, 199640, 223510, 293756, 331660, 367195, 447020, 514073, 587512, 663320, 734390, 894040, 1028146, 1468780, 2056292, 2570365, 2937560, 4112584, 5140730, 10281460, 20562920]

約数ペア:

[(1, 20562920), (2, 10281460), (4, 5140730), (5, 4112584), (7, 2937560), (8, 2570365), (10, 2056292), (14, 1468780), (20, 1028146), (23, 894040), (28, 734390), (31, 663320), (35, 587512), (40, 514073), (46, 447020), (56, 367195), (62, 331660), (70, 293756), (92, 223510), (103, 199640), (115, 178808), (124, 165830), (140, 146878), (155, 132664), (161, 127720), (184, 111755), (206, 99820), (217, 94760), (230, 89404), (248, 82915), (280, 73439), (310, 66332), (322, 63860), (412, 49910), (434, 47380), (460, 44702), (515, 39928), (620, 33166), (644, 31930), (713, 28840), (721, 28520), (805, 25544), (824, 24955), (868, 23690), (920, 22351), (1030, 19964), (1085, 18952), (1240, 16583), (1288, 15965), (1426, 14420), (1442, 14260), (1610, 12772), (1736, 11845), (2060, 9982), (2170, 9476), (2369, 8680), (2852, 7210), (2884, 7130), (3193, 6440), (3220, 6386), (3565, 5768), (3605, 5704), (4120, 4991), (4340, 4738)]