20970621

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{2621}}^1$

素因数の和:2761

約数の個数: 24

約数和(自身を含む): 34904064

約数和(自身を除く): 13933443

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 2621, 2667, 7863, 8001, 18347, 23589, 55041, 165123, 332867, 998601, 2330069, 2995803, 6990207, 20970621]

約数ペア:

[(1, 20970621), (3, 6990207), (7, 2995803), (9, 2330069), (21, 998601), (63, 332867), (127, 165123), (381, 55041), (889, 23589), (1143, 18347), (2621, 8001), (2667, 7863)]