18693003

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{163}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 29556736

約数和(自身を除く): 10863733

約数列:

[1, 3, 7, 21, 43, 127, 129, 163, 301, 381, 489, 889, 903, 1141, 2667, 3423, 5461, 7009, 16383, 20701, 21027, 38227, 49063, 62103, 114681, 144907, 147189, 434721, 890143, 2670429, 6231001, 18693003]

約数ペア:

[(1, 18693003), (3, 6231001), (7, 2670429), (21, 890143), (43, 434721), (127, 147189), (129, 144907), (163, 114681), (301, 62103), (381, 49063), (489, 38227), (889, 21027), (903, 20701), (1141, 16383), (2667, 7009), (3423, 5461)]