20618240

素因数分解:

$2^{10}\times 5^1\times {\mathrm{4027}}^1$

素因数の和:4052

約数の個数: 44

約数和(自身を含む): 49471896

約数和(自身を除く): 28853656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 4027, 5120, 8054, 16108, 20135, 32216, 40270, 64432, 80540, 128864, 161080, 257728, 322160, 515456, 644320, 1030912, 1288640, 2061824, 2577280, 4123648, 5154560, 10309120, 20618240]

約数ペア:

[(1, 20618240), (2, 10309120), (4, 5154560), (5, 4123648), (8, 2577280), (10, 2061824), (16, 1288640), (20, 1030912), (32, 644320), (40, 515456), (64, 322160), (80, 257728), (128, 161080), (160, 128864), (256, 80540), (320, 64432), (512, 40270), (640, 32216), (1024, 20135), (1280, 16108), (2560, 8054), (4027, 5120)]