19991686

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{283}}^1$

素因数の和:341

約数の個数: 48

約数和(自身を含む): 37419840

約数和(自身を除く): 17428154

約数列:

[1, 2, 11, 13, 19, 22, 26, 38, 143, 169, 209, 247, 283, 286, 338, 418, 494, 566, 1859, 2717, 3113, 3211, 3679, 3718, 5377, 5434, 6226, 6422, 7358, 10754, 35321, 40469, 47827, 59147, 69901, 70642, 80938, 95654, 118294, 139802, 526097, 768911, 908713, 1052194, 1537822, 1817426, 9995843, 19991686]

約数ペア:

[(1, 19991686), (2, 9995843), (11, 1817426), (13, 1537822), (19, 1052194), (22, 908713), (26, 768911), (38, 526097), (143, 139802), (169, 118294), (209, 95654), (247, 80938), (283, 70642), (286, 69901), (338, 59147), (418, 47827), (494, 40469), (566, 35321), (1859, 10754), (2717, 7358), (3113, 6422), (3211, 6226), (3679, 5434), (3718, 5377)]