1991240

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{743}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 4553280

約数和(自身を除く): 2562040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 743, 1340, 1486, 2680, 2972, 3715, 5944, 7430, 14860, 29720, 49781, 99562, 199124, 248905, 398248, 497810, 995620, 1991240]

約数ペア:

[(1, 1991240), (2, 995620), (4, 497810), (5, 398248), (8, 248905), (10, 199124), (20, 99562), (40, 49781), (67, 29720), (134, 14860), (268, 7430), (335, 5944), (536, 3715), (670, 2972), (743, 2680), (1340, 1486)]