55720287

素因数分解:

$3^2\times 7^1\times {\mathrm{647}}^1\times {\mathrm{1367}}^1$

素因数の和:2027

約数の個数: 24

約数和(自身を含む): 92192256

約数和(自身を除く): 36471969

約数列:

[1, 3, 7, 9, 21, 63, 647, 1367, 1941, 4101, 4529, 5823, 9569, 12303, 13587, 28707, 40761, 86121, 884449, 2653347, 6191143, 7960041, 18573429, 55720287]

約数ペア:

[(1, 55720287), (3, 18573429), (7, 7960041), (9, 6191143), (21, 2653347), (63, 884449), (647, 86121), (1367, 40761), (1941, 28707), (4101, 13587), (4529, 12303), (5823, 9569)]