213523919

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{12071}}^1$

素因数の和:12123

約数の個数: 18

約数和(自身を含む): 262167624

約数和(自身を除く): 48643705

約数列:

[1, 7, 19, 49, 133, 361, 931, 2527, 12071, 17689, 84497, 229349, 591479, 1605443, 4357631, 11238101, 30503417, 213523919]

約数ペア:

[(1, 213523919), (7, 30503417), (19, 11238101), (49, 4357631), (133, 1605443), (361, 591479), (931, 229349), (2527, 84497), (12071, 17689)]