20078457

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{25841}}^1$

素因数の和:25888

約数の個数: 16

約数和(自身を含む): 31423872

約数和(自身を除く): 11345415

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 25841, 77523, 180887, 542661, 956117, 2868351, 6692819, 20078457]

約数ペア:

[(1, 20078457), (3, 6692819), (7, 2868351), (21, 956117), (37, 542661), (111, 180887), (259, 77523), (777, 25841)]