21000575248

素因数分解:

$2^4\times {\mathrm{263}}^1\times {\mathrm{4990631}}^1$

素因数の和:4990902

約数の個数: 20

約数和(自身を含む): 40843332288

約数和(自身を除く): 19842757040

約数列:

[1, 2, 4, 8, 16, 263, 526, 1052, 2104, 4208, 4990631, 9981262, 19962524, 39925048, 79850096, 1312535953, 2625071906, 5250143812, 10500287624, 21000575248]

約数ペア:

[(1, 21000575248), (2, 10500287624), (4, 5250143812), (8, 2625071906), (16, 1312535953), (263, 79850096), (526, 39925048), (1052, 19962524), (2104, 9981262), (4208, 4990631)]