20342974

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{647}}^1$

素因数の和:927

約数の個数: 16

約数和(自身を含む): 31104000

約数和(自身を除く): 10761026

約数列:

[1, 2, 79, 158, 199, 398, 647, 1294, 15721, 31442, 51113, 102226, 128753, 257506, 10171487, 20342974]

約数ペア:

[(1, 20342974), (2, 10171487), (79, 257506), (158, 128753), (199, 102226), (398, 51113), (647, 31442), (1294, 15721)]