15399839

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1$

素因数の和:207

約数の個数: 32

約数和(自身を含む): 20127744

約数和(自身を除く): 4727905

約数列:

[1, 7, 13, 31, 53, 91, 103, 217, 371, 403, 689, 721, 1339, 1643, 2821, 3193, 4823, 5459, 9373, 11501, 21359, 22351, 38213, 41509, 70967, 149513, 169229, 290563, 496769, 1184603, 2199977, 15399839]

約数ペア:

[(1, 15399839), (7, 2199977), (13, 1184603), (31, 496769), (53, 290563), (91, 169229), (103, 149513), (217, 70967), (371, 41509), (403, 38213), (689, 22351), (721, 21359), (1339, 11501), (1643, 9373), (2821, 5459), (3193, 4823)]