21807072

素因数分解:

$2^5\times 3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{373}}^1$

素因数の和:425

約数の個数: 144

約数和(自身を含む): 73513440

約数和(自身を除く): 51706368

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 29, 32, 36, 42, 48, 56, 58, 63, 72, 84, 87, 96, 112, 116, 126, 144, 168, 174, 203, 224, 232, 252, 261, 288, 336, 348, 373, 406, 464, 504, 522, 609, 672, 696, 746, 812, 928, 1008, 1044, 1119, 1218, 1392, 1492, 1624, 1827, 2016, 2088, 2238, 2436, 2611, 2784, 2984, 3248, 3357, 3654, 4176, 4476, 4872, 5222, 5968, 6496, 6714, 7308, 7833, 8352, 8952, 9744, 10444, 10817, 11936, 13428, 14616, 15666, 17904, 19488, 20888, 21634, 23499, 26856, 29232, 31332, 32451, 35808, 41776, 43268, 46998, 53712, 58464, 62664, 64902, 75719, 83552, 86536, 93996, 97353, 107424, 125328, 129804, 151438, 173072, 187992, 194706, 227157, 250656, 259608, 302876, 346144, 375984, 389412, 454314, 519216, 605752, 681471, 751968, 778824, 908628, 1038432, 1211504, 1362942, 1557648, 1817256, 2423008, 2725884, 3115296, 3634512, 5451768, 7269024, 10903536, 21807072]

約数ペア:

[(1, 21807072), (2, 10903536), (3, 7269024), (4, 5451768), (6, 3634512), (7, 3115296), (8, 2725884), (9, 2423008), (12, 1817256), (14, 1557648), (16, 1362942), (18, 1211504), (21, 1038432), (24, 908628), (28, 778824), (29, 751968), (32, 681471), (36, 605752), (42, 519216), (48, 454314), (56, 389412), (58, 375984), (63, 346144), (72, 302876), (84, 259608), (87, 250656), (96, 227157), (112, 194706), (116, 187992), (126, 173072), (144, 151438), (168, 129804), (174, 125328), (203, 107424), (224, 97353), (232, 93996), (252, 86536), (261, 83552), (288, 75719), (336, 64902), (348, 62664), (373, 58464), (406, 53712), (464, 46998), (504, 43268), (522, 41776), (609, 35808), (672, 32451), (696, 31332), (746, 29232), (812, 26856), (928, 23499), (1008, 21634), (1044, 20888), (1119, 19488), (1218, 17904), (1392, 15666), (1492, 14616), (1624, 13428), (1827, 11936), (2016, 10817), (2088, 10444), (2238, 9744), (2436, 8952), (2611, 8352), (2784, 7833), (2984, 7308), (3248, 6714), (3357, 6496), (3654, 5968), (4176, 5222), (4476, 4872)]