20551168

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:159

約数の個数: 80

約数和(自身を含む): 46403280

約数和(自身を除く): 25852112

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 41, 44, 64, 82, 88, 89, 128, 164, 176, 178, 256, 328, 352, 356, 451, 512, 656, 704, 712, 902, 979, 1312, 1408, 1424, 1804, 1958, 2624, 2816, 2848, 3608, 3649, 3916, 5248, 5632, 5696, 7216, 7298, 7832, 10496, 11392, 14432, 14596, 15664, 20992, 22784, 28864, 29192, 31328, 40139, 45568, 57728, 58384, 62656, 80278, 115456, 116768, 125312, 160556, 230912, 233536, 250624, 321112, 467072, 501248, 642224, 934144, 1284448, 1868288, 2568896, 5137792, 10275584, 20551168]

約数ペア:

[(1, 20551168), (2, 10275584), (4, 5137792), (8, 2568896), (11, 1868288), (16, 1284448), (22, 934144), (32, 642224), (41, 501248), (44, 467072), (64, 321112), (82, 250624), (88, 233536), (89, 230912), (128, 160556), (164, 125312), (176, 116768), (178, 115456), (256, 80278), (328, 62656), (352, 58384), (356, 57728), (451, 45568), (512, 40139), (656, 31328), (704, 29192), (712, 28864), (902, 22784), (979, 20992), (1312, 15664), (1408, 14596), (1424, 14432), (1804, 11392), (1958, 10496), (2624, 7832), (2816, 7298), (2848, 7216), (3608, 5696), (3649, 5632), (3916, 5248)]