397974514

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{204509}}^1$

素因数の和:204657

約数の個数: 16

約数和(自身を含む): 687153600

約数和(自身を除く): 289179086

約数列:

[1, 2, 7, 14, 139, 278, 973, 1946, 204509, 409018, 1431563, 2863126, 28426751, 56853502, 198987257, 397974514]

約数ペア:

[(1, 397974514), (2, 198987257), (7, 56853502), (14, 28426751), (139, 2863126), (278, 1431563), (973, 409018), (1946, 204509)]