21813904

素因数分解:

$2^4\times 7^1\times {\mathrm{194767}}^1$

素因数の和:194782

約数の個数: 20

約数和(自身を含む): 48302464

約数和(自身を除く): 26488560

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 194767, 389534, 779068, 1363369, 1558136, 2726738, 3116272, 5453476, 10906952, 21813904]

約数ペア:

[(1, 21813904), (2, 10906952), (4, 5453476), (7, 3116272), (8, 2726738), (14, 1558136), (16, 1363369), (28, 779068), (56, 389534), (112, 194767)]