21390733826

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{138900869}}^1$

素因数の和:138900889

約数の個数: 16

約数和(自身を含む): 40003450560

約数和(自身を除く): 18612716734

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 138900869, 277801738, 972306083, 1527909559, 1944612166, 3055819118, 10695366913, 21390733826]

約数ペア:

[(1, 21390733826), (2, 10695366913), (7, 3055819118), (11, 1944612166), (14, 1527909559), (22, 972306083), (77, 277801738), (154, 138900869)]