20973568

素因数分解:

$2^{11}\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1$

素因数の和:66

約数の個数: 144

約数和(自身を含む): 56019600

約数和(自身を除く): 35046032

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 19, 22, 28, 32, 38, 44, 49, 56, 64, 76, 77, 88, 98, 112, 128, 133, 152, 154, 176, 196, 209, 224, 256, 266, 304, 308, 352, 392, 418, 448, 512, 532, 539, 608, 616, 704, 784, 836, 896, 931, 1024, 1064, 1078, 1216, 1232, 1408, 1463, 1568, 1672, 1792, 1862, 2048, 2128, 2156, 2432, 2464, 2816, 2926, 3136, 3344, 3584, 3724, 4256, 4312, 4864, 4928, 5632, 5852, 6272, 6688, 7168, 7448, 8512, 8624, 9728, 9856, 10241, 11264, 11704, 12544, 13376, 14336, 14896, 17024, 17248, 19456, 19712, 20482, 22528, 23408, 25088, 26752, 29792, 34048, 34496, 38912, 39424, 40964, 46816, 50176, 53504, 59584, 68096, 68992, 78848, 81928, 93632, 100352, 107008, 119168, 136192, 137984, 157696, 163856, 187264, 214016, 238336, 272384, 275968, 327712, 374528, 428032, 476672, 551936, 655424, 749056, 953344, 1103872, 1310848, 1498112, 1906688, 2621696, 2996224, 5243392, 10486784, 20973568]

約数ペア:

[(1, 20973568), (2, 10486784), (4, 5243392), (7, 2996224), (8, 2621696), (11, 1906688), (14, 1498112), (16, 1310848), (19, 1103872), (22, 953344), (28, 749056), (32, 655424), (38, 551936), (44, 476672), (49, 428032), (56, 374528), (64, 327712), (76, 275968), (77, 272384), (88, 238336), (98, 214016), (112, 187264), (128, 163856), (133, 157696), (152, 137984), (154, 136192), (176, 119168), (196, 107008), (209, 100352), (224, 93632), (256, 81928), (266, 78848), (304, 68992), (308, 68096), (352, 59584), (392, 53504), (418, 50176), (448, 46816), (512, 40964), (532, 39424), (539, 38912), (608, 34496), (616, 34048), (704, 29792), (784, 26752), (836, 25088), (896, 23408), (931, 22528), (1024, 20482), (1064, 19712), (1078, 19456), (1216, 17248), (1232, 17024), (1408, 14896), (1463, 14336), (1568, 13376), (1672, 12544), (1792, 11704), (1862, 11264), (2048, 10241), (2128, 9856), (2156, 9728), (2432, 8624), (2464, 8512), (2816, 7448), (2926, 7168), (3136, 6688), (3344, 6272), (3584, 5852), (3724, 5632), (4256, 4928), (4312, 4864)]