397907420

素因数分解:

$2^2\times 5^1\times {\mathrm{2087}}^1\times {\mathrm{9533}}^1$

素因数の和:11629

約数の個数: 24

約数和(自身を含む): 836093664

約数和(自身を除く): 438186244

約数列:

[1, 2, 4, 5, 10, 20, 2087, 4174, 8348, 9533, 10435, 19066, 20870, 38132, 41740, 47665, 95330, 190660, 19895371, 39790742, 79581484, 99476855, 198953710, 397907420]

約数ペア:

[(1, 397907420), (2, 198953710), (4, 99476855), (5, 79581484), (10, 39790742), (20, 19895371), (2087, 190660), (4174, 95330), (8348, 47665), (9533, 41740), (10435, 38132), (19066, 20870)]