15858205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 21897216

約数和(自身を除く): 6039011

約数列:

[1, 5, 11, 31, 55, 71, 131, 155, 341, 355, 655, 781, 1441, 1705, 2201, 3905, 4061, 7205, 9301, 11005, 20305, 24211, 44671, 46505, 102311, 121055, 223355, 288331, 511555, 1441655, 3171641, 15858205]

約数ペア:

[(1, 15858205), (5, 3171641), (11, 1441655), (31, 511555), (55, 288331), (71, 223355), (131, 121055), (155, 102311), (341, 46505), (355, 44671), (655, 24211), (781, 20305), (1441, 11005), (1705, 9301), (2201, 7205), (3905, 4061)]