21386547

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26113}}^1$

素因数の和:26139

約数の個数: 24

約数和(自身を含む): 38021984

約数和(自身を除く): 16635437

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26113, 78339, 182791, 235017, 339469, 548373, 1018407, 1645119, 2376283, 3055221, 7128849, 21386547]

約数ペア:

[(1, 21386547), (3, 7128849), (7, 3055221), (9, 2376283), (13, 1645119), (21, 1018407), (39, 548373), (63, 339469), (91, 235017), (117, 182791), (273, 78339), (819, 26113)]