19894839

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:259

約数の個数: 32

約数和(自身を含む): 29196288

約数和(自身を除く): 9301449

約数列:

[1, 3, 23, 31, 69, 71, 93, 131, 213, 393, 713, 1633, 2139, 2201, 3013, 4061, 4899, 6603, 9039, 9301, 12183, 27903, 50623, 93403, 151869, 213923, 280209, 288331, 641769, 864993, 6631613, 19894839]

約数ペア:

[(1, 19894839), (3, 6631613), (23, 864993), (31, 641769), (69, 288331), (71, 280209), (93, 213923), (131, 151869), (213, 93403), (393, 50623), (713, 27903), (1633, 12183), (2139, 9301), (2201, 9039), (3013, 6603), (4061, 4899)]