20384240

素因数分解:

$2^4\times 5^1\times {\mathrm{254803}}^1$

素因数の和:254816

約数の個数: 20

約数和(自身を含む): 47393544

約数和(自身を除く): 27009304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 254803, 509606, 1019212, 1274015, 2038424, 2548030, 4076848, 5096060, 10192120, 20384240]

約数ペア:

[(1, 20384240), (2, 10192120), (4, 5096060), (5, 4076848), (8, 2548030), (10, 2038424), (16, 1274015), (20, 1019212), (40, 509606), (80, 254803)]