1378460

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:605

約数の個数: 24

約数和(自身を含む): 2919840

約数和(自身を除く): 1541380

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 439, 628, 785, 878, 1570, 1756, 2195, 3140, 4390, 8780, 68923, 137846, 275692, 344615, 689230, 1378460]

約数ペア:

[(1, 1378460), (2, 689230), (4, 344615), (5, 275692), (10, 137846), (20, 68923), (157, 8780), (314, 4390), (439, 3140), (628, 2195), (785, 1756), (878, 1570)]