9977891

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1283}}^1$

素因数の和:1402

約数の個数: 16

約数和(自身を含む): 12572928

約数和(自身を除く): 2595037

約数列:

[1, 7, 11, 77, 101, 707, 1111, 1283, 7777, 8981, 14113, 98791, 129583, 907081, 1425413, 9977891]

約数ペア:

[(1, 9977891), (7, 1425413), (11, 907081), (77, 129583), (101, 98791), (707, 14113), (1111, 8981), (1283, 7777)]