21167741853

素因数分解:

$3^3\times {\mathrm{397}}^1\times {\mathrm{1974787}}^1$

素因数の和:1975193

約数の個数: 16

約数和(自身を含む): 31438624960

約数和(自身を除く): 10270883107

約数列:

[1, 3, 9, 27, 397, 1191, 3573, 10719, 1974787, 5924361, 17773083, 53319249, 783990439, 2351971317, 7055913951, 21167741853]

約数ペア:

[(1, 21167741853), (3, 7055913951), (9, 2351971317), (27, 783990439), (397, 53319249), (1191, 17773083), (3573, 5924361), (10719, 1974787)]