639984398

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{51871}}^1$

素因数の和:52103

約数の個数: 16

約数和(自身を含む): 995942400

約数和(自身を除く): 355958002

約数列:

[1, 2, 31, 62, 199, 398, 6169, 12338, 51871, 103742, 1608001, 3216002, 10322329, 20644658, 319992199, 639984398]

約数ペア:

[(1, 639984398), (2, 319992199), (31, 20644658), (62, 10322329), (199, 3216002), (398, 1608001), (6169, 103742), (12338, 51871)]