28679938

素因数分解:

$2^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{19889}}^1$

素因数の和:20001

約数の個数: 16

約数和(自身を含む): 49645440

約数和(自身を除く): 20965502

約数列:

[1, 2, 7, 14, 103, 206, 721, 1442, 19889, 39778, 139223, 278446, 2048567, 4097134, 14339969, 28679938]

約数ペア:

[(1, 28679938), (2, 14339969), (7, 4097134), (14, 2048567), (103, 278446), (206, 139223), (721, 39778), (1442, 19889)]