18734991

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 28498176

約数和(自身を除く): 9763185

約数列:

[1, 3, 11, 33, 41, 61, 123, 183, 227, 451, 671, 681, 1353, 2013, 2497, 2501, 7491, 7503, 9307, 13847, 27511, 27921, 41541, 82533, 102377, 152317, 307131, 456951, 567727, 1703181, 6244997, 18734991]

約数ペア:

[(1, 18734991), (3, 6244997), (11, 1703181), (33, 567727), (41, 456951), (61, 307131), (123, 152317), (183, 102377), (227, 82533), (451, 41541), (671, 27921), (681, 27511), (1353, 13847), (2013, 9307), (2497, 7503), (2501, 7491)]