639808546

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1295159}}^1$

素因数の和:1295193

約数の個数: 16

約数和(自身を含む): 1087934400

約数和(自身を除く): 448125854

約数列:

[1, 2, 13, 19, 26, 38, 247, 494, 1295159, 2590318, 16837067, 24608021, 33674134, 49216042, 319904273, 639808546]

約数ペア:

[(1, 639808546), (2, 319904273), (13, 49216042), (19, 33674134), (26, 24608021), (38, 16837067), (247, 2590318), (494, 1295159)]