12721709

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 17418240

約数和(自身を除く): 4696531

約数列:

[1, 7, 11, 13, 71, 77, 91, 143, 179, 497, 781, 923, 1001, 1253, 1969, 2327, 5467, 6461, 10153, 12709, 13783, 16289, 25597, 71071, 88963, 139799, 165217, 179179, 978593, 1156519, 1817387, 12721709]

約数ペア:

[(1, 12721709), (7, 1817387), (11, 1156519), (13, 978593), (71, 179179), (77, 165217), (91, 139799), (143, 88963), (179, 71071), (497, 25597), (781, 16289), (923, 13783), (1001, 12709), (1253, 10153), (1969, 6461), (2327, 5467)]