639745922

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{64013}}^1$

素因数の和:64297

約数の個数: 16

約数和(自身を含む): 1013981760

約数和(自身を除く): 374235838

約数列:

[1, 2, 19, 38, 263, 526, 4997, 9994, 64013, 128026, 1216247, 2432494, 16835419, 33670838, 319872961, 639745922]

約数ペア:

[(1, 639745922), (2, 319872961), (19, 33670838), (38, 16835419), (263, 2432494), (526, 1216247), (4997, 128026), (9994, 64013)]