20081347

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{389}}^1$

素因数の和:451

約数の個数: 24

約数和(自身を含む): 24963120

約数和(自身を除く): 4881773

約数列:

[1, 11, 13, 19, 143, 209, 247, 361, 389, 2717, 3971, 4279, 4693, 5057, 7391, 51623, 55627, 81301, 96083, 140429, 1056913, 1544719, 1825577, 20081347]

約数ペア:

[(1, 20081347), (11, 1825577), (13, 1544719), (19, 1056913), (143, 140429), (209, 96083), (247, 81301), (361, 55627), (389, 51623), (2717, 7391), (3971, 5057), (4279, 4693)]