21400821

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3209}}^1$

素因数の和:3250

約数の個数: 32

約数和(自身を含む): 35952000

約数和(自身を除く): 14551179

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 117, 171, 247, 351, 513, 741, 2223, 3209, 6669, 9627, 28881, 41717, 60971, 86643, 125151, 182913, 375453, 548739, 792623, 1126359, 1646217, 2377869, 7133607, 21400821]

約数ペア:

[(1, 21400821), (3, 7133607), (9, 2377869), (13, 1646217), (19, 1126359), (27, 792623), (39, 548739), (57, 375453), (117, 182913), (171, 125151), (247, 86643), (351, 60971), (513, 41717), (741, 28881), (2223, 9627), (3209, 6669)]