2780042

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{491}}^1$

素因数の和:661

約数の個数: 16

約数和(自身を含む): 4428000

約数和(自身を除く): 1647958

約数列:

[1, 2, 19, 38, 149, 298, 491, 982, 2831, 5662, 9329, 18658, 73159, 146318, 1390021, 2780042]

約数ペア:

[(1, 2780042), (2, 1390021), (19, 146318), (38, 73159), (149, 18658), (298, 9329), (491, 5662), (982, 2831)]