199904816

素因数分解:

$2^4\times {\mathrm{571}}^1\times {\mathrm{21881}}^1$

素因数の和:22460

約数の個数: 20

約数和(自身を含む): 388011624

約数和(自身を除く): 188106808

約数列:

[1, 2, 4, 8, 16, 571, 1142, 2284, 4568, 9136, 21881, 43762, 87524, 175048, 350096, 12494051, 24988102, 49976204, 99952408, 199904816]

約数ペア:

[(1, 199904816), (2, 99952408), (4, 49976204), (8, 24988102), (16, 12494051), (571, 350096), (1142, 175048), (2284, 87524), (4568, 43762), (9136, 21881)]