21489696

素因数分解:

$2^5\times 3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:159

約数の個数: 144

約数和(自身を含む): 66044160

約数和(自身を除く): 44554464

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 29, 31, 32, 36, 48, 58, 62, 72, 83, 87, 93, 96, 116, 124, 144, 166, 174, 186, 232, 248, 249, 261, 279, 288, 332, 348, 372, 464, 496, 498, 522, 558, 664, 696, 744, 747, 899, 928, 992, 996, 1044, 1116, 1328, 1392, 1488, 1494, 1798, 1992, 2088, 2232, 2407, 2573, 2656, 2697, 2784, 2976, 2988, 3596, 3984, 4176, 4464, 4814, 5146, 5394, 5976, 7192, 7221, 7719, 7968, 8091, 8352, 8928, 9628, 10292, 10788, 11952, 14384, 14442, 15438, 16182, 19256, 20584, 21576, 21663, 23157, 23904, 28768, 28884, 30876, 32364, 38512, 41168, 43152, 43326, 46314, 57768, 61752, 64728, 74617, 77024, 82336, 86304, 86652, 92628, 115536, 123504, 129456, 149234, 173304, 185256, 223851, 231072, 247008, 258912, 298468, 346608, 370512, 447702, 596936, 671553, 693216, 741024, 895404, 1193872, 1343106, 1790808, 2387744, 2686212, 3581616, 5372424, 7163232, 10744848, 21489696]

約数ペア:

[(1, 21489696), (2, 10744848), (3, 7163232), (4, 5372424), (6, 3581616), (8, 2686212), (9, 2387744), (12, 1790808), (16, 1343106), (18, 1193872), (24, 895404), (29, 741024), (31, 693216), (32, 671553), (36, 596936), (48, 447702), (58, 370512), (62, 346608), (72, 298468), (83, 258912), (87, 247008), (93, 231072), (96, 223851), (116, 185256), (124, 173304), (144, 149234), (166, 129456), (174, 123504), (186, 115536), (232, 92628), (248, 86652), (249, 86304), (261, 82336), (279, 77024), (288, 74617), (332, 64728), (348, 61752), (372, 57768), (464, 46314), (496, 43326), (498, 43152), (522, 41168), (558, 38512), (664, 32364), (696, 30876), (744, 28884), (747, 28768), (899, 23904), (928, 23157), (992, 21663), (996, 21576), (1044, 20584), (1116, 19256), (1328, 16182), (1392, 15438), (1488, 14442), (1494, 14384), (1798, 11952), (1992, 10788), (2088, 10292), (2232, 9628), (2407, 8928), (2573, 8352), (2656, 8091), (2697, 7968), (2784, 7719), (2976, 7221), (2988, 7192), (3596, 5976), (3984, 5394), (4176, 5146), (4464, 4814)]