199712989

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1\times {\mathrm{1033}}^1$

素因数の和:1500

約数の個数: 16

約数和(自身を含む): 232277760

約数和(自身を除く): 32564771

約数列:

[1, 7, 71, 389, 497, 1033, 2723, 7231, 27619, 73343, 193333, 401837, 513401, 2812859, 28530427, 199712989]

約数ペア:

[(1, 199712989), (7, 28530427), (71, 2812859), (389, 513401), (497, 401837), (1033, 193333), (2723, 73343), (7231, 27619)]