639331318

素因数分解:

$2^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1\times {\mathrm{43321}}^1$

素因数の和:43527

約数の個数: 16

約数和(自身を含む): 985662144

約数和(自身を除く): 346330826

約数列:

[1, 2, 47, 94, 157, 314, 7379, 14758, 43321, 86642, 2036087, 4072174, 6801397, 13602794, 319665659, 639331318]

約数ペア:

[(1, 639331318), (2, 319665659), (47, 13602794), (94, 6801397), (157, 4072174), (314, 2036087), (7379, 86642), (14758, 43321)]