2978289

素因数分解:

$3^4\times {\mathrm{83}}^1\times {\mathrm{443}}^1$

素因数の和:538

約数の個数: 20

約数和(自身を含む): 4512816

約数和(自身を除く): 1534527

約数列:

[1, 3, 9, 27, 81, 83, 249, 443, 747, 1329, 2241, 3987, 6723, 11961, 35883, 36769, 110307, 330921, 992763, 2978289]

約数ペア:

[(1, 2978289), (3, 992763), (9, 330921), (27, 110307), (81, 36769), (83, 35883), (249, 11961), (443, 6723), (747, 3987), (1329, 2241)]