20307751

素因数分解:

${\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:390

約数の個数: 16

約数和(自身を含む): 22176000

約数和(自身を除く): 1868249

約数列:

[1, 19, 41, 131, 199, 779, 2489, 3781, 5371, 8159, 26069, 102049, 155021, 495311, 1068829, 20307751]

約数ペア:

[(1, 20307751), (19, 1068829), (41, 495311), (131, 155021), (199, 102049), (779, 26069), (2489, 8159), (3781, 5371)]