21238768

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{10133}}^1$

素因数の和:10272

約数の個数: 20

約数和(自身を含む): 41468328

約数和(自身を除く): 20229560

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10133, 20266, 40532, 81064, 162128, 1327423, 2654846, 5309692, 10619384, 21238768]

約数ペア:

[(1, 21238768), (2, 10619384), (4, 5309692), (8, 2654846), (16, 1327423), (131, 162128), (262, 81064), (524, 40532), (1048, 20266), (2096, 10133)]