638709124

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{409}}^1\times {\mathrm{5827}}^1$

素因数の和:6307

約数の個数: 24

約数和(自身を含む): 1137392480

約数和(自身を除く): 498683356

約数列:

[1, 2, 4, 67, 134, 268, 409, 818, 1636, 5827, 11654, 23308, 27403, 54806, 109612, 390409, 780818, 1561636, 2383243, 4766486, 9532972, 159677281, 319354562, 638709124]

約数ペア:

[(1, 638709124), (2, 319354562), (4, 159677281), (67, 9532972), (134, 4766486), (268, 2383243), (409, 1561636), (818, 780818), (1636, 390409), (5827, 109612), (11654, 54806), (23308, 27403)]