389266180

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{246371}}^1$

素因数の和:246459

約数の個数: 24

約数和(自身を含む): 827809920

約数和(自身を除く): 438543740

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 246371, 492742, 985484, 1231855, 2463710, 4927420, 19463309, 38926618, 77853236, 97316545, 194633090, 389266180]

約数ペア:

[(1, 389266180), (2, 194633090), (4, 97316545), (5, 77853236), (10, 38926618), (20, 19463309), (79, 4927420), (158, 2463710), (316, 1231855), (395, 985484), (790, 492742), (1580, 246371)]