7921347

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{19853}}^1$

素因数の和:19882

約数の個数: 16

約数和(自身を含む): 12706560

約数和(自身を除く): 4785213

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 19853, 59559, 138971, 377207, 416913, 1131621, 2640449, 7921347]

約数ペア:

[(1, 7921347), (3, 2640449), (7, 1131621), (19, 416913), (21, 377207), (57, 138971), (133, 59559), (399, 19853)]