20959528

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{63901}}^1$

素因数の和:63948

約数の個数: 16

約数和(自身を含む): 40258260

約数和(自身を除く): 19298732

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 63901, 127802, 255604, 511208, 2619941, 5239882, 10479764, 20959528]

約数ペア:

[(1, 20959528), (2, 10479764), (4, 5239882), (8, 2619941), (41, 511208), (82, 255604), (164, 127802), (328, 63901)]