20193040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{337}}^1$

素因数の和:464

約数の個数: 80

約数和(自身を含む): 54317952

約数和(自身を除く): 34124912

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 107, 112, 140, 214, 280, 337, 428, 535, 560, 674, 749, 856, 1070, 1348, 1498, 1685, 1712, 2140, 2359, 2696, 2996, 3370, 3745, 4280, 4718, 5392, 5992, 6740, 7490, 8560, 9436, 11795, 11984, 13480, 14980, 18872, 23590, 26960, 29960, 36059, 37744, 47180, 59920, 72118, 94360, 144236, 180295, 188720, 252413, 288472, 360590, 504826, 576944, 721180, 1009652, 1262065, 1442360, 2019304, 2524130, 2884720, 4038608, 5048260, 10096520, 20193040]

約数ペア:

[(1, 20193040), (2, 10096520), (4, 5048260), (5, 4038608), (7, 2884720), (8, 2524130), (10, 2019304), (14, 1442360), (16, 1262065), (20, 1009652), (28, 721180), (35, 576944), (40, 504826), (56, 360590), (70, 288472), (80, 252413), (107, 188720), (112, 180295), (140, 144236), (214, 94360), (280, 72118), (337, 59920), (428, 47180), (535, 37744), (560, 36059), (674, 29960), (749, 26960), (856, 23590), (1070, 18872), (1348, 14980), (1498, 13480), (1685, 11984), (1712, 11795), (2140, 9436), (2359, 8560), (2696, 7490), (2996, 6740), (3370, 5992), (3745, 5392), (4280, 4718)]