21871503

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{877}}^1$

素因数の和:1063

約数の個数: 24

約数和(自身を含む): 33694128

約数和(自身を除く): 11822625

約数列:

[1, 3, 9, 17, 51, 153, 163, 489, 877, 1467, 2631, 2771, 7893, 8313, 14909, 24939, 44727, 134181, 142951, 428853, 1286559, 2430167, 7290501, 21871503]

約数ペア:

[(1, 21871503), (3, 7290501), (9, 2430167), (17, 1286559), (51, 428853), (153, 142951), (163, 134181), (489, 44727), (877, 24939), (1467, 14909), (2631, 8313), (2771, 7893)]