18710523

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{409}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 32235840

約数和(自身を除く): 13525317

約数列:

[1, 3, 9, 13, 17, 23, 39, 51, 69, 117, 153, 207, 221, 299, 391, 409, 663, 897, 1173, 1227, 1989, 2691, 3519, 3681, 5083, 5317, 6953, 9407, 15249, 15951, 20859, 28221, 45747, 47853, 62577, 84663, 90389, 122291, 159919, 271167, 366873, 479757, 813501, 1100619, 1439271, 2078947, 6236841, 18710523]

約数ペア:

[(1, 18710523), (3, 6236841), (9, 2078947), (13, 1439271), (17, 1100619), (23, 813501), (39, 479757), (51, 366873), (69, 271167), (117, 159919), (153, 122291), (207, 90389), (221, 84663), (299, 62577), (391, 47853), (409, 45747), (663, 28221), (897, 20859), (1173, 15951), (1227, 15249), (1989, 9407), (2691, 6953), (3519, 5317), (3681, 5083)]