278327980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1988057}}^1$

素因数の和:1988073

約数の個数: 24

約数和(自身を含む): 667987488

約数和(自身を除く): 389659508

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1988057, 3976114, 7952228, 9940285, 13916399, 19880570, 27832798, 39761140, 55665596, 69581995, 139163990, 278327980]

約数ペア:

[(1, 278327980), (2, 139163990), (4, 69581995), (5, 55665596), (7, 39761140), (10, 27832798), (14, 19880570), (20, 13916399), (28, 9940285), (35, 7952228), (70, 3976114), (140, 1988057)]