20839784

素因数分解:

$2^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{3613}}^1$

素因数の和:3729

約数の個数: 32

約数和(自身を含む): 45102720

約数和(自身を除く): 24262936

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 103, 206, 412, 721, 824, 1442, 2884, 3613, 5768, 7226, 14452, 25291, 28904, 50582, 101164, 202328, 372139, 744278, 1488556, 2604973, 2977112, 5209946, 10419892, 20839784]

約数ペア:

[(1, 20839784), (2, 10419892), (4, 5209946), (7, 2977112), (8, 2604973), (14, 1488556), (28, 744278), (56, 372139), (103, 202328), (206, 101164), (412, 50582), (721, 28904), (824, 25291), (1442, 14452), (2884, 7226), (3613, 5768)]