128465991

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{49391}}^1$

素因数の和:49431

約数の個数: 18

約数和(自身を含む): 197123472

約数和(自身を除く): 68657481

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 49391, 148173, 444519, 839647, 2518941, 7556823, 14273999, 42821997, 128465991]

約数ペア:

[(1, 128465991), (3, 42821997), (9, 14273999), (17, 7556823), (51, 2518941), (153, 839647), (289, 444519), (867, 148173), (2601, 49391)]