261983267

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{151523}}^1$

素因数の和:151562

約数の個数: 16

約数和(自身を含む): 339413760

約数和(自身を除く): 77430493

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 151523, 1060661, 1969799, 2878937, 13788593, 20152559, 37426181, 261983267]

約数ペア:

[(1, 261983267), (7, 37426181), (13, 20152559), (19, 13788593), (91, 2878937), (133, 1969799), (247, 1060661), (1729, 151523)]