21560805

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{68447}}^1$

素因数の和:68465

約数の個数: 24

約数和(自身を含む): 42711552

約数和(自身を除く): 21150747

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 68447, 205341, 342235, 479129, 616023, 1026705, 1437387, 2395645, 3080115, 4312161, 7186935, 21560805]

約数ペア:

[(1, 21560805), (3, 7186935), (5, 4312161), (7, 3080115), (9, 2395645), (15, 1437387), (21, 1026705), (35, 616023), (45, 479129), (63, 342235), (105, 205341), (315, 68447)]