21297136

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:206

約数の個数: 80

約数和(自身を含む): 49996800

約数和(自身を除く): 28699664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 79, 83, 112, 116, 158, 166, 203, 232, 316, 332, 406, 464, 553, 581, 632, 664, 812, 1106, 1162, 1264, 1328, 1624, 2212, 2291, 2324, 2407, 3248, 4424, 4582, 4648, 4814, 6557, 8848, 9164, 9296, 9628, 13114, 16037, 16849, 18328, 19256, 26228, 32074, 33698, 36656, 38512, 45899, 52456, 64148, 67396, 91798, 104912, 128296, 134792, 183596, 190153, 256592, 269584, 367192, 380306, 734384, 760612, 1331071, 1521224, 2662142, 3042448, 5324284, 10648568, 21297136]

約数ペア:

[(1, 21297136), (2, 10648568), (4, 5324284), (7, 3042448), (8, 2662142), (14, 1521224), (16, 1331071), (28, 760612), (29, 734384), (56, 380306), (58, 367192), (79, 269584), (83, 256592), (112, 190153), (116, 183596), (158, 134792), (166, 128296), (203, 104912), (232, 91798), (316, 67396), (332, 64148), (406, 52456), (464, 45899), (553, 38512), (581, 36656), (632, 33698), (664, 32074), (812, 26228), (1106, 19256), (1162, 18328), (1264, 16849), (1328, 16037), (1624, 13114), (2212, 9628), (2291, 9296), (2324, 9164), (2407, 8848), (3248, 6557), (4424, 4814), (4582, 4648)]