257714678

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{2381}}^1$

素因数の和:2600

約数の個数: 32

約数和(自身を含む): 436992192

約数和(自身を除く): 179277514

約数列:

[1, 2, 13, 23, 26, 46, 181, 299, 362, 598, 2353, 2381, 4163, 4706, 4762, 8326, 30953, 54119, 54763, 61906, 108238, 109526, 430961, 711919, 861922, 1423838, 5602493, 9912103, 11204986, 19824206, 128857339, 257714678]

約数ペア:

[(1, 257714678), (2, 128857339), (13, 19824206), (23, 11204986), (26, 9912103), (46, 5602493), (181, 1423838), (299, 861922), (362, 711919), (598, 430961), (2353, 109526), (2381, 108238), (4163, 61906), (4706, 54763), (4762, 54119), (8326, 30953)]