81945904

素因数分解:

$2^4\times {\mathrm{313}}^1\times {\mathrm{16363}}^1$

素因数の和:16684

約数の個数: 20

約数和(自身を含む): 159287176

約数和(自身を除く): 77341272

約数列:

[1, 2, 4, 8, 16, 313, 626, 1252, 2504, 5008, 16363, 32726, 65452, 130904, 261808, 5121619, 10243238, 20486476, 40972952, 81945904]

約数ペア:

[(1, 81945904), (2, 40972952), (4, 20486476), (8, 10243238), (16, 5121619), (313, 261808), (626, 130904), (1252, 65452), (2504, 32726), (5008, 16363)]