19897785

素因数分解:

$3^3\times 5^1\times {\mathrm{147391}}^1$

素因数の和:147405

約数の個数: 16

約数和(自身を含む): 35374080

約数和(自身を除く): 15476295

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 147391, 442173, 736955, 1326519, 2210865, 3979557, 6632595, 19897785]

約数ペア:

[(1, 19897785), (3, 6632595), (5, 3979557), (9, 2210865), (15, 1326519), (27, 736955), (45, 442173), (135, 147391)]