81571491

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{431}}^1\times {\mathrm{1237}}^1$

素因数の和:1691

約数の個数: 24

約数和(自身を含む): 125146944

約数和(自身を除く): 43575453

約数列:

[1, 3, 9, 17, 51, 153, 431, 1237, 1293, 3711, 3879, 7327, 11133, 21029, 21981, 63087, 65943, 189261, 533147, 1599441, 4798323, 9063499, 27190497, 81571491]

約数ペア:

[(1, 81571491), (3, 27190497), (9, 9063499), (17, 4798323), (51, 1599441), (153, 533147), (431, 189261), (1237, 65943), (1293, 63087), (3711, 21981), (3879, 21029), (7327, 11133)]