21232768

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{5351}}^1$

素因数の和:5396

約数の個数: 32

約数和(自身を含む): 43672320

約数和(自身を除く): 22439552

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 496, 992, 1984, 3968, 5351, 10702, 21404, 42808, 85616, 165881, 171232, 331762, 342464, 663524, 684928, 1327048, 2654096, 5308192, 10616384, 21232768]

約数ペア:

[(1, 21232768), (2, 10616384), (4, 5308192), (8, 2654096), (16, 1327048), (31, 684928), (32, 663524), (62, 342464), (64, 331762), (124, 171232), (128, 165881), (248, 85616), (496, 42808), (992, 21404), (1984, 10702), (3968, 5351)]