55129480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{491}}^1$

素因数の和:910

約数の個数: 64

約数和(自身を含む): 142404480

約数和(自身を除く): 87275000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 401, 491, 802, 982, 1604, 1964, 2005, 2455, 2807, 3208, 3437, 3928, 4010, 4910, 5614, 6874, 8020, 9820, 11228, 13748, 14035, 16040, 17185, 19640, 22456, 27496, 28070, 34370, 56140, 68740, 112280, 137480, 196891, 393782, 787564, 984455, 1378237, 1575128, 1968910, 2756474, 3937820, 5512948, 6891185, 7875640, 11025896, 13782370, 27564740, 55129480]

約数ペア:

[(1, 55129480), (2, 27564740), (4, 13782370), (5, 11025896), (7, 7875640), (8, 6891185), (10, 5512948), (14, 3937820), (20, 2756474), (28, 1968910), (35, 1575128), (40, 1378237), (56, 984455), (70, 787564), (140, 393782), (280, 196891), (401, 137480), (491, 112280), (802, 68740), (982, 56140), (1604, 34370), (1964, 28070), (2005, 27496), (2455, 22456), (2807, 19640), (3208, 17185), (3437, 16040), (3928, 14035), (4010, 13748), (4910, 11228), (5614, 9820), (6874, 8020)]