131405936

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{190997}}^1$

素因数の和:191048

約数の個数: 20

約数和(自身を含む): 260521272

約数和(自身を除く): 129115336

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 190997, 381994, 763988, 1527976, 3055952, 8212871, 16425742, 32851484, 65702968, 131405936]

約数ペア:

[(1, 131405936), (2, 65702968), (4, 32851484), (8, 16425742), (16, 8212871), (43, 3055952), (86, 1527976), (172, 763988), (344, 381994), (688, 190997)]