20178690812

素因数分解:

$2^2\times 7^1\times {\mathrm{1811}}^1\times {\mathrm{397939}}^1$

素因数の和:399761

約数の個数: 24

約数和(自身を含む): 40379767680

約数和(自身を除く): 20201076868

約数列:

[1, 2, 4, 7, 14, 28, 1811, 3622, 7244, 12677, 25354, 50708, 397939, 795878, 1591756, 2785573, 5571146, 11142292, 720667529, 1441335058, 2882670116, 5044672703, 10089345406, 20178690812]

約数ペア:

[(1, 20178690812), (2, 10089345406), (4, 5044672703), (7, 2882670116), (14, 1441335058), (28, 720667529), (1811, 11142292), (3622, 5571146), (7244, 2785573), (12677, 1591756), (25354, 795878), (50708, 397939)]