12640120

素因数分解:

$2^3\times 5^1\times {\mathrm{316003}}^1$

素因数の和:316014

約数の個数: 16

約数和(自身を含む): 28440360

約数和(自身を除く): 15800240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 316003, 632006, 1264012, 1580015, 2528024, 3160030, 6320060, 12640120]

約数ペア:

[(1, 12640120), (2, 6320060), (4, 3160030), (5, 2528024), (8, 1580015), (10, 1264012), (20, 632006), (40, 316003)]