18907863

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 28740096

約数和(自身を除く): 9832233

約数列:

[1, 3, 13, 23, 39, 69, 107, 197, 299, 321, 591, 897, 1391, 2461, 2561, 4173, 4531, 7383, 7683, 13593, 21079, 31993, 58903, 63237, 95979, 176709, 274027, 484817, 822081, 1454451, 6302621, 18907863]

約数ペア:

[(1, 18907863), (3, 6302621), (13, 1454451), (23, 822081), (39, 484817), (69, 274027), (107, 176709), (197, 95979), (299, 63237), (321, 58903), (591, 31993), (897, 21079), (1391, 13593), (2461, 7683), (2561, 7383), (4173, 4531)]