20008919

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 26050560

約数和(自身を除く): 6041641

約数列:

[1, 7, 19, 23, 31, 133, 161, 211, 217, 437, 589, 713, 1477, 3059, 4009, 4123, 4853, 4991, 6541, 13547, 28063, 33971, 45787, 92207, 94829, 124279, 150443, 645449, 869953, 1053101, 2858417, 20008919]

約数ペア:

[(1, 20008919), (7, 2858417), (19, 1053101), (23, 869953), (31, 645449), (133, 150443), (161, 124279), (211, 94829), (217, 92207), (437, 45787), (589, 33971), (713, 28063), (1477, 13547), (3059, 6541), (4009, 4991), (4123, 4853)]