687205377

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{180511}}^1$

素因数の和:180570

約数の個数: 20

約数和(自身を含む): 1048413696

約数和(自身を除く): 361208319

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 180511, 541533, 1624599, 4873797, 8484017, 14621391, 25452051, 76356153, 229068459, 687205377]

約数ペア:

[(1, 687205377), (3, 229068459), (9, 76356153), (27, 25452051), (47, 14621391), (81, 8484017), (141, 4873797), (423, 1624599), (1269, 541533), (3807, 180511)]