209521143

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61751}}^1$

素因数の和:61799

約数の個数: 24

約数和(自身を含む): 337165920

約数和(自身を除く): 127644777

約数列:

[1, 3, 9, 13, 29, 39, 87, 117, 261, 377, 1131, 3393, 61751, 185253, 555759, 802763, 1790779, 2408289, 5372337, 7224867, 16117011, 23280127, 69840381, 209521143]

約数ペア:

[(1, 209521143), (3, 69840381), (9, 23280127), (13, 16117011), (29, 7224867), (39, 5372337), (87, 2408289), (117, 1790779), (261, 802763), (377, 555759), (1131, 185253), (3393, 61751)]