1991907

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{277}}^1$

素因数の和:347

約数の個数: 24

約数和(自身を含む): 3122496

約数和(自身を除く): 1130589

約数列:

[1, 3, 9, 17, 47, 51, 141, 153, 277, 423, 799, 831, 2397, 2493, 4709, 7191, 13019, 14127, 39057, 42381, 117171, 221323, 663969, 1991907]

約数ペア:

[(1, 1991907), (3, 663969), (9, 221323), (17, 117171), (47, 42381), (51, 39057), (141, 14127), (153, 13019), (277, 7191), (423, 4709), (799, 2493), (831, 2397)]