21176813

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{4243}}^1$

素因数の和:4304

約数の個数: 16

約数和(自身を含む): 26075136

約数和(自身を除く): 4898323

約数列:

[1, 7, 23, 31, 161, 217, 713, 4243, 4991, 29701, 97589, 131533, 683123, 920731, 3025259, 21176813]

約数ペア:

[(1, 21176813), (7, 3025259), (23, 920731), (31, 683123), (161, 131533), (217, 97589), (713, 29701), (4243, 4991)]