20614400

素因数分解:

$2^8\times 5^2\times {\mathrm{3221}}^1$

素因数の和:3247

約数の個数: 54

約数和(自身を含む): 51039702

約数和(自身を除く): 30425302

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 3221, 6400, 6442, 12884, 16105, 25768, 32210, 51536, 64420, 80525, 103072, 128840, 161050, 206144, 257680, 322100, 412288, 515360, 644200, 824576, 1030720, 1288400, 2061440, 2576800, 4122880, 5153600, 10307200, 20614400]

約数ペア:

[(1, 20614400), (2, 10307200), (4, 5153600), (5, 4122880), (8, 2576800), (10, 2061440), (16, 1288400), (20, 1030720), (25, 824576), (32, 644200), (40, 515360), (50, 412288), (64, 322100), (80, 257680), (100, 206144), (128, 161050), (160, 128840), (200, 103072), (256, 80525), (320, 64420), (400, 51536), (640, 32210), (800, 25768), (1280, 16105), (1600, 12884), (3200, 6442), (3221, 6400)]