20491984

素因数分解:

$2^4\times {\mathrm{971}}^1\times {\mathrm{1319}}^1$

素因数の和:2298

約数の個数: 20

約数和(自身を含む): 39774240

約数和(自身を除く): 19282256

約数列:

[1, 2, 4, 8, 16, 971, 1319, 1942, 2638, 3884, 5276, 7768, 10552, 15536, 21104, 1280749, 2561498, 5122996, 10245992, 20491984]

約数ペア:

[(1, 20491984), (2, 10245992), (4, 5122996), (8, 2561498), (16, 1280749), (971, 21104), (1319, 15536), (1942, 10552), (2638, 7768), (3884, 5276)]