19798064

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{509}}^1$

素因数の和:558

約数の個数: 80

約数和(自身を含む): 47809440

約数和(自身を除く): 28011376

約数列:

[1, 2, 4, 8, 11, 13, 16, 17, 22, 26, 34, 44, 52, 68, 88, 104, 136, 143, 176, 187, 208, 221, 272, 286, 374, 442, 509, 572, 748, 884, 1018, 1144, 1496, 1768, 2036, 2288, 2431, 2992, 3536, 4072, 4862, 5599, 6617, 8144, 8653, 9724, 11198, 13234, 17306, 19448, 22396, 26468, 34612, 38896, 44792, 52936, 69224, 72787, 89584, 95183, 105872, 112489, 138448, 145574, 190366, 224978, 291148, 380732, 449956, 582296, 761464, 899912, 1164592, 1237379, 1522928, 1799824, 2474758, 4949516, 9899032, 19798064]

約数ペア:

[(1, 19798064), (2, 9899032), (4, 4949516), (8, 2474758), (11, 1799824), (13, 1522928), (16, 1237379), (17, 1164592), (22, 899912), (26, 761464), (34, 582296), (44, 449956), (52, 380732), (68, 291148), (88, 224978), (104, 190366), (136, 145574), (143, 138448), (176, 112489), (187, 105872), (208, 95183), (221, 89584), (272, 72787), (286, 69224), (374, 52936), (442, 44792), (509, 38896), (572, 34612), (748, 26468), (884, 22396), (1018, 19448), (1144, 17306), (1496, 13234), (1768, 11198), (2036, 9724), (2288, 8653), (2431, 8144), (2992, 6617), (3536, 5599), (4072, 4862)]