1288400

素因数分解:

$2^4\times 5^2\times {\mathrm{3221}}^1$

素因数の和:3239

約数の個数: 30

約数和(自身を含む): 3096342

約数和(自身を除く): 1807942

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 3221, 6442, 12884, 16105, 25768, 32210, 51536, 64420, 80525, 128840, 161050, 257680, 322100, 644200, 1288400]

約数ペア:

[(1, 1288400), (2, 644200), (4, 322100), (5, 257680), (8, 161050), (10, 128840), (16, 80525), (20, 64420), (25, 51536), (40, 32210), (50, 25768), (80, 16105), (100, 12884), (200, 6442), (400, 3221)]