19662021

素因数分解:

$3^4\times {\mathrm{67}}^1\times {\mathrm{3623}}^1$

素因数の和:3702

約数の個数: 20

約数和(自身を含む): 29818272

約数和(自身を除く): 10156251

約数列:

[1, 3, 9, 27, 67, 81, 201, 603, 1809, 3623, 5427, 10869, 32607, 97821, 242741, 293463, 728223, 2184669, 6554007, 19662021]

約数ペア:

[(1, 19662021), (3, 6554007), (9, 2184669), (27, 728223), (67, 293463), (81, 242741), (201, 97821), (603, 32607), (1809, 10869), (3623, 5427)]