20565999

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{947}}^1$

素因数の和:1099

約数の個数: 24

約数和(自身を含む): 31549440

約数和(自身を除く): 10983441

約数列:

[1, 3, 9, 19, 57, 127, 171, 381, 947, 1143, 2413, 2841, 7239, 8523, 17993, 21717, 53979, 120269, 161937, 360807, 1082421, 2285111, 6855333, 20565999]

約数ペア:

[(1, 20565999), (3, 6855333), (9, 2285111), (19, 1082421), (57, 360807), (127, 161937), (171, 120269), (381, 53979), (947, 21717), (1143, 17993), (2413, 8523), (2841, 7239)]