20621440

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{4603}}^1$

素因数の和:4629

約数の個数: 64

約数和(自身を含む): 56352960

約数和(自身を除く): 35731520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 4603, 9206, 18412, 23015, 32221, 36824, 46030, 64442, 73648, 92060, 128884, 147296, 161105, 184120, 257768, 294592, 322210, 368240, 515536, 589184, 644420, 736480, 1031072, 1288840, 1472960, 2062144, 2577680, 2945920, 4124288, 5155360, 10310720, 20621440]

約数ペア:

[(1, 20621440), (2, 10310720), (4, 5155360), (5, 4124288), (7, 2945920), (8, 2577680), (10, 2062144), (14, 1472960), (16, 1288840), (20, 1031072), (28, 736480), (32, 644420), (35, 589184), (40, 515536), (56, 368240), (64, 322210), (70, 294592), (80, 257768), (112, 184120), (128, 161105), (140, 147296), (160, 128884), (224, 92060), (280, 73648), (320, 64442), (448, 46030), (560, 36824), (640, 32221), (896, 23015), (1120, 18412), (2240, 9206), (4480, 4603)]