21504879

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1187}}^1$

素因数の和:1268

約数の個数: 32

約数和(自身を含む): 35354880

約数和(自身を除く): 13850001

約数列:

[1, 3, 9, 11, 27, 33, 61, 99, 183, 297, 549, 671, 1187, 1647, 2013, 3561, 6039, 10683, 13057, 18117, 32049, 39171, 72407, 117513, 217221, 352539, 651663, 796477, 1954989, 2389431, 7168293, 21504879]

約数ペア:

[(1, 21504879), (3, 7168293), (9, 2389431), (11, 1954989), (27, 796477), (33, 651663), (61, 352539), (99, 217221), (183, 117513), (297, 72407), (549, 39171), (671, 32049), (1187, 18117), (1647, 13057), (2013, 10683), (3561, 6039)]