128565278

素因数分解:

$2^1\times {\mathrm{257}}^1\times {\mathrm{389}}^1\times {\mathrm{643}}^1$

素因数の和:1291

約数の個数: 16

約数和(自身を含む): 194397840

約数和(自身を除く): 65832562

約数列:

[1, 2, 257, 389, 514, 643, 778, 1286, 99973, 165251, 199946, 250127, 330502, 500254, 64282639, 128565278]

約数ペア:

[(1, 128565278), (2, 64282639), (257, 500254), (389, 330502), (514, 250127), (643, 199946), (778, 165251), (1286, 99973)]