20849101390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{643}}^1\times {\mathrm{249421}}^1$

素因数の和:250084

約数の個数: 32

約数和(自身を含む): 40478197536

約数和(自身を除く): 19629096146

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 643, 1286, 3215, 6430, 8359, 16718, 41795, 83590, 249421, 498842, 1247105, 2494210, 3242473, 6484946, 16212365, 32424730, 160377703, 320755406, 801888515, 1603777030, 2084910139, 4169820278, 10424550695, 20849101390]

約数ペア:

[(1, 20849101390), (2, 10424550695), (5, 4169820278), (10, 2084910139), (13, 1603777030), (26, 801888515), (65, 320755406), (130, 160377703), (643, 32424730), (1286, 16212365), (3215, 6484946), (6430, 3242473), (8359, 2494210), (16718, 1247105), (41795, 498842), (83590, 249421)]