215684581

素因数分解:

$7^1\times {\mathrm{37}}^2\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:469

約数の個数: 24

約数和(自身を含む): 257717376

約数和(自身を除く): 42032795

約数列:

[1, 7, 37, 71, 259, 317, 497, 1369, 2219, 2627, 9583, 11729, 18389, 22507, 82103, 97199, 157549, 433973, 680393, 832759, 3037811, 5829313, 30812083, 215684581]

約数ペア:

[(1, 215684581), (7, 30812083), (37, 5829313), (71, 3037811), (259, 832759), (317, 680393), (497, 433973), (1369, 157549), (2219, 97199), (2627, 82103), (9583, 22507), (11729, 18389)]