1681965

素因数分解:

$3^4\times 5^1\times {\mathrm{4153}}^1$

素因数の和:4170

約数の個数: 20

約数和(自身を含む): 3015804

約数和(自身を除く): 1333839

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 4153, 12459, 20765, 37377, 62295, 112131, 186885, 336393, 560655, 1681965]

約数ペア:

[(1, 1681965), (3, 560655), (5, 336393), (9, 186885), (15, 112131), (27, 62295), (45, 37377), (81, 20765), (135, 12459), (405, 4153)]