21000819833

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{157900901}}^1$

素因数の和:157900927

約数の個数: 8

約数和(自身を含む): 25264144320

約数和(自身を除く): 4263324487

約数列:

[1, 7, 19, 133, 157900901, 1105306307, 3000117119, 21000819833]

約数ペア:

[(1, 21000819833), (7, 3000117119), (19, 1105306307), (133, 157900901)]