180000009

素因数分解:

$3^3\times 7^1\times {\mathrm{952381}}^1$

素因数の和:952397

約数の個数: 16

約数和(自身を含む): 304762240

約数和(自身を除く): 124762231

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 952381, 2857143, 6666667, 8571429, 20000001, 25714287, 60000003, 180000009]

約数ペア:

[(1, 180000009), (3, 60000003), (7, 25714287), (9, 20000001), (21, 8571429), (27, 6666667), (63, 2857143), (189, 952381)]