645021

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:205

約数の個数: 24

約数和(自身を含む): 1037400

約数和(自身を除く): 392379

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 149, 333, 447, 481, 1341, 1443, 1937, 4329, 5513, 5811, 16539, 17433, 49617, 71669, 215007, 645021]

約数ペア:

[(1, 645021), (3, 215007), (9, 71669), (13, 49617), (37, 17433), (39, 16539), (111, 5811), (117, 5513), (149, 4329), (333, 1937), (447, 1443), (481, 1341)]