20009968979

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{281549}}^1$

素因数の和:281651

約数の個数: 32

約数和(自身を含む): 27245030400

約数和(自身を除く): 7235061421

約数列:

[1, 7, 11, 13, 71, 77, 91, 143, 497, 781, 923, 1001, 5467, 6461, 10153, 71071, 281549, 1970843, 3097039, 3660137, 19989979, 21679273, 25620959, 40261507, 139929853, 219889769, 259869727, 281830549, 1539228383, 1819088089, 2858566997, 20009968979]

約数ペア:

[(1, 20009968979), (7, 2858566997), (11, 1819088089), (13, 1539228383), (71, 281830549), (77, 259869727), (91, 219889769), (143, 139929853), (497, 40261507), (781, 25620959), (923, 21679273), (1001, 19989979), (5467, 3660137), (6461, 3097039), (10153, 1970843), (71071, 281549)]