20505429

素因数分解:

$3^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{1949}}^1$

素因数の和:2129

約数の個数: 24

約数和(自身を含む): 34070400

約数和(自身を除く): 13564971

約数列:

[1, 3, 7, 9, 21, 63, 167, 501, 1169, 1503, 1949, 3507, 5847, 10521, 13643, 17541, 40929, 122787, 325483, 976449, 2278381, 2929347, 6835143, 20505429]

約数ペア:

[(1, 20505429), (3, 6835143), (7, 2929347), (9, 2278381), (21, 976449), (63, 325483), (167, 122787), (501, 40929), (1169, 17541), (1503, 13643), (1949, 10521), (3507, 5847)]