20545278

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{263401}}^1$

素因数の和:263419

約数の個数: 16

約数和(自身を含む): 44251536

約数和(自身を除く): 23706258

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 263401, 526802, 790203, 1580406, 3424213, 6848426, 10272639, 20545278]

約数ペア:

[(1, 20545278), (2, 10272639), (3, 6848426), (6, 3424213), (13, 1580406), (26, 790203), (39, 526802), (78, 263401)]