15397921

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{311}}^1\times {\mathrm{643}}^1$

素因数の和:972

約数の個数: 16

約数和(自身を含む): 19289088

約数和(自身を除く): 3891167

約数列:

[1, 7, 11, 77, 311, 643, 2177, 3421, 4501, 7073, 23947, 49511, 199973, 1399811, 2199703, 15397921]

約数ペア:

[(1, 15397921), (7, 2199703), (11, 1399811), (77, 199973), (311, 49511), (643, 23947), (2177, 7073), (3421, 4501)]