19907456

素因数分解:

$2^7\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 42595200

約数和(自身を除く): 22687744

約数列:

[1, 2, 4, 8, 16, 29, 31, 32, 58, 62, 64, 116, 124, 128, 173, 232, 248, 346, 464, 496, 692, 899, 928, 992, 1384, 1798, 1856, 1984, 2768, 3596, 3712, 3968, 5017, 5363, 5536, 7192, 10034, 10726, 11072, 14384, 20068, 21452, 22144, 28768, 40136, 42904, 57536, 80272, 85808, 115072, 155527, 160544, 171616, 311054, 321088, 343232, 622108, 642176, 686464, 1244216, 2488432, 4976864, 9953728, 19907456]

約数ペア:

[(1, 19907456), (2, 9953728), (4, 4976864), (8, 2488432), (16, 1244216), (29, 686464), (31, 642176), (32, 622108), (58, 343232), (62, 321088), (64, 311054), (116, 171616), (124, 160544), (128, 155527), (173, 115072), (232, 85808), (248, 80272), (346, 57536), (464, 42904), (496, 40136), (692, 28768), (899, 22144), (928, 21452), (992, 20068), (1384, 14384), (1798, 11072), (1856, 10726), (1984, 10034), (2768, 7192), (3596, 5536), (3712, 5363), (3968, 5017)]