20515360

素因数分解:

$2^5\times 5^1\times {\mathrm{128221}}^1$

素因数の和:128236

約数の個数: 24

約数和(自身を含む): 48467916

約数和(自身を除く): 27952556

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 128221, 256442, 512884, 641105, 1025768, 1282210, 2051536, 2564420, 4103072, 5128840, 10257680, 20515360]

約数ペア:

[(1, 20515360), (2, 10257680), (4, 5128840), (5, 4103072), (8, 2564420), (10, 2051536), (16, 1282210), (20, 1025768), (32, 641105), (40, 512884), (80, 256442), (160, 128221)]