21841171088

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{977}}^1\times {\mathrm{1789}}^1$

素因数の和:2856

約数の個数: 80

約数和(自身を含む): 46888606080

約数和(自身を除く): 25047434992

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 142, 176, 284, 568, 781, 977, 1136, 1562, 1789, 1954, 3124, 3578, 3908, 6248, 7156, 7816, 10747, 12496, 14312, 15632, 19679, 21494, 28624, 39358, 42988, 69367, 78716, 85976, 127019, 138734, 157432, 171952, 254038, 277468, 314864, 508076, 554936, 763037, 1016152, 1109872, 1397209, 1526074, 1747853, 2032304, 2794418, 3052148, 3495706, 5588836, 6104296, 6991412, 11177672, 12208592, 13982824, 19226383, 22355344, 27965648, 38452766, 76905532, 124097563, 153811064, 248195126, 307622128, 496390252, 992780504, 1365073193, 1985561008, 2730146386, 5460292772, 10920585544, 21841171088]

約数ペア:

[(1, 21841171088), (2, 10920585544), (4, 5460292772), (8, 2730146386), (11, 1985561008), (16, 1365073193), (22, 992780504), (44, 496390252), (71, 307622128), (88, 248195126), (142, 153811064), (176, 124097563), (284, 76905532), (568, 38452766), (781, 27965648), (977, 22355344), (1136, 19226383), (1562, 13982824), (1789, 12208592), (1954, 11177672), (3124, 6991412), (3578, 6104296), (3908, 5588836), (6248, 3495706), (7156, 3052148), (7816, 2794418), (10747, 2032304), (12496, 1747853), (14312, 1526074), (15632, 1397209), (19679, 1109872), (21494, 1016152), (28624, 763037), (39358, 554936), (42988, 508076), (69367, 314864), (78716, 277468), (85976, 254038), (127019, 171952), (138734, 157432)]