1991168

素因数分解:

$2^9\times {\mathrm{3889}}^1$

素因数の和:3907

約数の個数: 20

約数和(自身を含む): 3979470

約数和(自身を除く): 1988302

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 3889, 7778, 15556, 31112, 62224, 124448, 248896, 497792, 995584, 1991168]

約数ペア:

[(1, 1991168), (2, 995584), (4, 497792), (8, 248896), (16, 124448), (32, 62224), (64, 31112), (128, 15556), (256, 7778), (512, 3889)]