20389888

素因数分解:

$2^{13}\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:176

約数の個数: 56

約数和(自身を含む): 43251120

約数和(自身を除く): 22861232

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 131, 152, 256, 262, 304, 512, 524, 608, 1024, 1048, 1216, 2048, 2096, 2432, 2489, 4096, 4192, 4864, 4978, 8192, 8384, 9728, 9956, 16768, 19456, 19912, 33536, 38912, 39824, 67072, 77824, 79648, 134144, 155648, 159296, 268288, 318592, 536576, 637184, 1073152, 1274368, 2548736, 5097472, 10194944, 20389888]

約数ペア:

[(1, 20389888), (2, 10194944), (4, 5097472), (8, 2548736), (16, 1274368), (19, 1073152), (32, 637184), (38, 536576), (64, 318592), (76, 268288), (128, 159296), (131, 155648), (152, 134144), (256, 79648), (262, 77824), (304, 67072), (512, 39824), (524, 38912), (608, 33536), (1024, 19912), (1048, 19456), (1216, 16768), (2048, 9956), (2096, 9728), (2432, 8384), (2489, 8192), (4096, 4978), (4192, 4864)]