21311101

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{701}}^1$

素因数の和:852

約数の個数: 16

約数和(自身を含む): 25204608

約数和(自身を除く): 3893507

約数列:

[1, 7, 43, 101, 301, 701, 707, 4343, 4907, 30143, 30401, 70801, 211001, 495607, 3044443, 21311101]

約数ペア:

[(1, 21311101), (7, 3044443), (43, 495607), (101, 211001), (301, 70801), (701, 30401), (707, 30143), (4343, 4907)]