21189512

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20219}}^1$

素因数の和:20356

約数の個数: 16

約数和(自身を含む): 40035600

約数和(自身を除く): 18846088

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20219, 40438, 80876, 161752, 2648689, 5297378, 10594756, 21189512]

約数ペア:

[(1, 21189512), (2, 10594756), (4, 5297378), (8, 2648689), (131, 161752), (262, 80876), (524, 40438), (1048, 20219)]