20749729

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1091}}^1$

素因数の和:1141

約数の個数: 32

約数和(自身を含む): 29352960

約数和(自身を除く): 8603231

約数列:

[1, 7, 11, 13, 19, 77, 91, 133, 143, 209, 247, 1001, 1091, 1463, 1729, 2717, 7637, 12001, 14183, 19019, 20729, 84007, 99281, 145103, 156013, 228019, 269477, 1092091, 1596133, 1886339, 2964247, 20749729]

約数ペア:

[(1, 20749729), (7, 2964247), (11, 1886339), (13, 1596133), (19, 1092091), (77, 269477), (91, 228019), (133, 156013), (143, 145103), (209, 99281), (247, 84007), (1001, 20729), (1091, 19019), (1463, 14183), (1729, 12001), (2717, 7637)]