18913851

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1481}}^1$

素因数の和:1544

約数の個数: 32

約数和(自身を含む): 31299840

約数和(自身を除く): 12385989

約数列:

[1, 3, 9, 11, 27, 33, 43, 99, 129, 297, 387, 473, 1161, 1419, 1481, 4257, 4443, 12771, 13329, 16291, 39987, 48873, 63683, 146619, 191049, 439857, 573147, 700513, 1719441, 2101539, 6304617, 18913851]

約数ペア:

[(1, 18913851), (3, 6304617), (9, 2101539), (11, 1719441), (27, 700513), (33, 573147), (43, 439857), (99, 191049), (129, 146619), (297, 63683), (387, 48873), (473, 39987), (1161, 16291), (1419, 13329), (1481, 12771), (4257, 4443)]