128903978

素因数分解:

$2^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{27817}}^1$

素因数の和:28157

約数の個数: 16

約数和(自身を含む): 221653824

約数和(自身を除く): 92749846

約数列:

[1, 2, 7, 14, 331, 662, 2317, 4634, 27817, 55634, 194719, 389438, 9207427, 18414854, 64451989, 128903978]

約数ペア:

[(1, 128903978), (2, 64451989), (7, 18414854), (14, 9207427), (331, 389438), (662, 194719), (2317, 55634), (4634, 27817)]