81138256

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{38711}}^1$

素因数の和:38850

約数の個数: 20

約数和(自身を含む): 158409504

約数和(自身を除く): 77271248

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 38711, 77422, 154844, 309688, 619376, 5071141, 10142282, 20284564, 40569128, 81138256]

約数ペア:

[(1, 81138256), (2, 40569128), (4, 20284564), (8, 10142282), (16, 5071141), (131, 619376), (262, 309688), (524, 154844), (1048, 77422), (2096, 38711)]