20617793

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:285

約数の個数: 24

約数和(自身を含む): 25603200

約数和(自身を除く): 4985407

約数列:

[1, 7, 19, 41, 133, 199, 287, 361, 779, 1393, 2527, 3781, 5453, 8159, 14801, 26467, 57113, 71839, 103607, 155021, 502873, 1085147, 2945399, 20617793]

約数ペア:

[(1, 20617793), (7, 2945399), (19, 1085147), (41, 502873), (133, 155021), (199, 103607), (287, 71839), (361, 57113), (779, 26467), (1393, 14801), (2527, 8159), (3781, 5453)]