198579199

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{167}}^1\times {\mathrm{179}}^1$

素因数の和:439

約数の個数: 32

約数和(自身を含む): 250629120

約数和(自身を除く): 52049921

約数列:

[1, 7, 13, 73, 91, 167, 179, 511, 949, 1169, 1253, 2171, 2327, 6643, 12191, 13067, 15197, 16289, 29893, 85337, 91469, 158483, 169871, 209251, 388609, 1109381, 1189097, 2182189, 2720263, 15275323, 28368457, 198579199]

約数ペア:

[(1, 198579199), (7, 28368457), (13, 15275323), (73, 2720263), (91, 2182189), (167, 1189097), (179, 1109381), (511, 388609), (949, 209251), (1169, 169871), (1253, 158483), (2171, 91469), (2327, 85337), (6643, 29893), (12191, 16289), (13067, 15197)]