278047

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:198

約数の個数: 16

約数和(自身を含む): 364032

約数和(自身を除く): 85985

約数列:

[1, 7, 11, 23, 77, 157, 161, 253, 1099, 1727, 1771, 3611, 12089, 25277, 39721, 278047]

約数ペア:

[(1, 278047), (7, 39721), (11, 25277), (23, 12089), (77, 3611), (157, 1771), (161, 1727), (253, 1099)]