21056829

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:349

約数の個数: 24

約数和(自身を含む): 30208800

約数和(自身を除く): 9151971

約数列:

[1, 3, 17, 51, 149, 163, 289, 447, 489, 867, 2533, 2771, 7599, 8313, 24287, 43061, 47107, 72861, 129183, 141321, 412879, 1238637, 7018943, 21056829]

約数ペア:

[(1, 21056829), (3, 7018943), (17, 1238637), (51, 412879), (149, 141321), (163, 129183), (289, 72861), (447, 47107), (489, 43061), (867, 24287), (2533, 8313), (2771, 7599)]