21686808

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:193

約数の個数: 128

約数和(自身を含む): 65318400

約数和(自身を除く): 43631592

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 13, 22, 24, 26, 33, 39, 44, 52, 66, 71, 78, 88, 89, 104, 132, 142, 143, 156, 178, 213, 264, 267, 284, 286, 312, 356, 426, 429, 534, 568, 572, 712, 781, 852, 858, 923, 979, 1068, 1144, 1157, 1562, 1704, 1716, 1846, 1958, 2136, 2314, 2343, 2769, 2937, 3124, 3432, 3471, 3692, 3916, 4628, 4686, 5538, 5874, 6248, 6319, 6942, 7384, 7832, 9256, 9372, 10153, 11076, 11748, 12638, 12727, 13884, 18744, 18957, 20306, 22152, 23496, 25276, 25454, 27768, 30459, 37914, 38181, 40612, 50552, 50908, 60918, 69509, 75828, 76362, 81224, 82147, 101816, 121836, 139018, 151656, 152724, 164294, 208527, 243672, 246441, 278036, 305448, 328588, 417054, 492882, 556072, 657176, 834108, 903617, 985764, 1668216, 1807234, 1971528, 2710851, 3614468, 5421702, 7228936, 10843404, 21686808]

約数ペア:

[(1, 21686808), (2, 10843404), (3, 7228936), (4, 5421702), (6, 3614468), (8, 2710851), (11, 1971528), (12, 1807234), (13, 1668216), (22, 985764), (24, 903617), (26, 834108), (33, 657176), (39, 556072), (44, 492882), (52, 417054), (66, 328588), (71, 305448), (78, 278036), (88, 246441), (89, 243672), (104, 208527), (132, 164294), (142, 152724), (143, 151656), (156, 139018), (178, 121836), (213, 101816), (264, 82147), (267, 81224), (284, 76362), (286, 75828), (312, 69509), (356, 60918), (426, 50908), (429, 50552), (534, 40612), (568, 38181), (572, 37914), (712, 30459), (781, 27768), (852, 25454), (858, 25276), (923, 23496), (979, 22152), (1068, 20306), (1144, 18957), (1157, 18744), (1562, 13884), (1704, 12727), (1716, 12638), (1846, 11748), (1958, 11076), (2136, 10153), (2314, 9372), (2343, 9256), (2769, 7832), (2937, 7384), (3124, 6942), (3432, 6319), (3471, 6248), (3692, 5874), (3916, 5538), (4628, 4686)]